Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Mitek Systems, Inc. (“Mitek,” the “Company,” “we,” “us,” and “our”) is a leading innovator of mobile image capture and digital identity verification solutions. Mitek is a software development company with expertise in artificial intelligence and machine learning. Mitek currently serves more than 7,800 financial services organizations and leading marketplace and financial technology (“fintech”) brands around the globe. Customers count on Mitek to deliver trusted and convenient online experiences, detect and reduce fraud, and document Know Your Customer (“KYC”) and Anti-Money Laundering (“AML”) regulatory compliance. The Company’s solutions are embedded in native mobile apps and web browsers to facilitate digital consumer experiences. Mitek’s identity verification and authentication technologies and services make it possible for banks, financial services organizations and the world’s leading marketplace and sharing platforms to verify an individual’s identity during digital transactions, allowing them to reduce risk and meet regulatory requirements. The Company’s advanced mobile deposit system enables secure, fast and convenient deposit services. Thousands of organizations use Mitek solutions to optimize the security of mobile check deposits, new account openings and more. Mitek markets and sells its products and services worldwide through internal, direct sales teams located in the U.S., Europe, and Latin America as well as through channel partners. Our partner sales strategy includes channel partners who are financial services technology providers and identity verification providers. These partners integrate our products into their solutions to meet the needs of their customers, typically provisioning Mitek services through their respective platforms.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of the Company as of December 31, 2022 have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and, accordingly, they do not include all information and footnote disclosures required by accounting principles generally accepted in the U.S. (“GAAP”). The Company believes the footnotes and other disclosures made in the financial statements are adequate for a fair presentation of the results of the interim periods presented. The financial statements include all adjustments (solely of a normal recurring nature) which are, in the opinion of management, necessary to make the information presented not misleading. You should read these financial statements and the accompanying notes in conjunction with the condensed consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2022, filed with the U.S. Securities and Exchange Commission (“SEC”) on July 31, 2023. Results for the three months ended December 31, 2022 are not necessarily indicative of results for any other interim period or for a full fiscal year.
Principles of Consolidation	Principles of ConsolidationThe condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses, deferred taxes, and related disclosure of contingent assets and liabilities. On an ongoing basis, management reviews its estimates based upon currently available information. Actual results could differ materially from those estimates. These estimates include, but are not limited to, assessing the collectability of accounts receivable, estimation of the value of stock-based compensation awards, fair value of assets and liabilities acquired, impairment of goodwill, useful lives of intangible assets, fair value of debt derivatives, standalone selling price related to revenue recognition, contingent consideration, and income taxes.
Reclassifications and Revision	Reclassifications A reclassification has been made to the prior periods’ condensed consolidated financial statements in order to conform to the current period presentation. Accrued interest payable was included in the other current liabilities line in the condensed consolidated balance sheet as of September 30, 2022, however, it has been presented separately in the condensed consolidated balance sheet as of December 31, 2022 so that the total of the other current liabilities line is less than five percent of total current liabilities. Revision Cost of revenue—services and other and research and development for the three months ended December 31, 2021 have been revised, as previously disclosed in Note 13 in the Annual Report on Form 10-K for the year ended September 30, 2022, filed with the SEC on July 31, 2023. The immaterial revision is made for consistency with the restatements of the three and six months ended March 31, 2022 and the three and nine months ended June 30, 2022.
Recently Adopted Accounting Pronouncements, Change in Significant Accounting Policy and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements The Company did not adopt any new accounting pronouncements in the quarter ended December 31, 2022. Change in Significant Accounting Policy The Company’s significant accounting policies are disclosed in the Company’s audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2022, filed with the SEC on July 31, 2023. There have been no changes to these accounting policies through December 31, 2022. Recently Issued Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04) and also issued subsequent amendments to the initial guidance (collectively, Topic 848). Topic 848 provides optional guidance for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. The Company will adopt Topic 848 when the relevant contracts are modified upon transition to alternative reference rates. The Company does not expect the adoption of Topic 848 will have a material impact on the condensed consolidated financial statements. No other new accounting pronouncement issued or effective during the three months ended December 31, 2022 had, or is expected to have, a material impact on the Company’s condensed consolidated financial statements.
Revenue Recognition	Nature of Goods and Services The following is a description of principal activities from which the Company generates its revenue. Contracts with customers are evaluated on a contract-by-contract basis as contracts may include multiple types of goods and services as described below. Software and Hardware Software and hardware revenue is generated from on premise software license sales, as well as sales of hardware scanner boxes and on premise appliance products. Software is typically sold as a time-based license with a term of one to three years. For software license agreements that are distinct, the Company recognizes software license revenue upon delivery and after evidence of a contract exists. Hardware revenue is recognized at a point in time upon shipment and after evidence of a contract exists. Services and Other Services and other revenue is generated from the sale of software as a service (“SaaS”) products and services, maintenance associated with the sale of on premise software licenses and consulting and professional services. The Company recognizes professional services revenue over the period in which such services are performed. The Company’s SaaS offerings give customers the option to be charged upon their incurred usage in arrears (“Pay as You Go”), or commit to a minimum spend over their contracted period, with the ability to purchase unlimited additional transactions above the minimum during the contract term. Revenue related to Pay as You Go contracts are recognized based on the customer’s actual usage, in the period of usage. For contracts which include a minimum commitment, the Company is standing ready to provide as many transactions as desired by the customer throughout the contract term, and revenue is recognized on a ratable basis over the contract period including an estimate of usage above the minimum commitment. Usage above minimum commitment is estimated by looking at historical usage, expected volume, and other factors to project out for the remainder of the contract term. The estimated usage-based revenues are constrained to the amount the Company expects to be entitled to receive in exchange for providing access to its platform. If professional services are deemed to be distinct, revenue is recognized as services are performed. The Company does not view the signing of the contract or the provision of initial setup services as discrete earnings events that are distinct. Significant Judgments in Application of the Guidance The Company uses the following methods, inputs, and assumptions in determining amounts of revenue to recognize: Identification of Performance Obligations For contracts that contain multiple performance obligations, which include combinations of software licenses, maintenance, and services, the Company accounts for individual goods or services as a separate performance obligation if they are distinct. The good or service is distinct if the good or service is separately identifiable from other items in the arrangement and if a customer can benefit from it on its own or with other resources that are readily available to the customer. If these criteria are not met, the promised goods or services are accounted for as a combined performance obligation. Determination of Transaction Price The transaction price is determined based on the consideration to which the Company will be entitled in exchange for transferring products or services to the customer. The Company includes any fixed charges within its contracts as part of the total transaction price. To the extent that variable consideration is not constrained, the Company includes an estimate of the variable amount, as appropriate, within the total transaction price and updates its assumptions over the duration of the contract. As a practical expedient, the Company does not adjust the transaction price for the effects of a significant financing component if, at contract inception, the period between customer payment and the transfer of goods or services is expected to be one year or less. Assessment of Estimates of Variable Consideration Many of the Company’s contracts with customers contain some component of variable consideration; however, variable consideration will only be included in the transaction price to the extent it is probable that a significant reversal of revenues recognized will not occur when the uncertainty associated with the variable consideration is resolved. The Company may constrain the estimated transaction price in the event of a high degree of uncertainty as to the final consideration amount owed because of an extended length of time over which the fees may be adjusted or due to uncertainty surrounding collectability. The Company estimates variable consideration in its contracts primarily using the expected value method as the Company believes this method represents the most appropriate estimate for this consideration, based on historical usage trends, the individual contract considerations, and its best judgment at the time. Allocation of Transaction Price The transaction price, including any discounts, is allocated between separate goods and services in a contract that contains multiple performance obligations based on their relative standalone selling prices. The standalone selling prices are based on the prices at which the Company separately sells each good or service. For items that are not sold separately, the Company estimates the standalone selling prices using available information such as market conditions and internally approved pricing guidelines. In certain situations, primarily transactional SaaS revenue described above, the Company allocates variable consideration to a series of distinct goods or services within a contract. The Company allocates variable payments to one or more, but not all, of the distinct goods or services or to a series of distinct goods or services in a contract when (i) the variable payment relates specifically to the Company’s efforts to transfer the distinct good or service and (ii) the variable payment is for an amount that depicts the amount of consideration to which the Company expects to be entitled in exchange for transferring the promised goods or services to its customer. Contract assets, reported within a separate line in current assets and the other non-current assets line in the condensed consolidated balance sheets, primarily result from when the right to consideration is conditional upon factors other than the passage of time. Contract liabilities primarily relate to advance consideration received from customers (deferred revenue), for which transfer of control occurs, and therefore revenue is recognized as services are provided. Contract balances are reported in a net contract asset or liability position on a contract-by-contract basis at the end of each reporting period.Contract costs included in other current and non-current assets on the condensed consolidated balance sheetsContract costs are amortized based on the transfer of goods or services to which the asset relates. The amortization period also considers expected customer lives and whether the asset relates to goods or services transferred under a specific anticipated contract. These costs are included in selling and marketing expenses in the condensed consolidated statement of operations and other comprehensive income
Fair Value Measurements and Disclosures	Level 1: Includes investments in U.S. Government and agency securities, which are valued based on recently executed transactions in the same or similar securities.•Level 2: Includes Convertible senior notes and corporate debt securities. Corporate debt securities are valued using quoted prices for similar assets or liabilities, quoted prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. On February 5, 2021, the Company issued the 2026 Notes as defined and further described in Note 9. Concurrently with the issuance of the 2026 Notes, the Company entered into the Notes Hedge (as defined in Note 9) and Warrant Transactions (as defined in Note 9) which in combination are intended to reduce the potential dilution from the conversion of the 2026 Notes. The fair value of the Notes Hedge and the embedded conversion derivative were estimated using a Black-Scholes model. Based on the fair value hierarchy, the Company classified the Notes Hedge and the embedded conversion derivative as Level 2 as significant inputs are observable, either directly or indirectly. The significant inputs and assumptions used in the models to calculate the fair value of the derivatives include the Common Stock price, exercise price of the derivatives, risk-free interest rate, volatility, annual coupon rate and remaining contractual term. •Level 3: As of December 31, 2022, total acquisition-related contingent consideration of $6.3 million is recorded in acquisition-related contingent consideration, in the condensed consolidated balance sheets.

Nature of Operations and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Dec. 31, 2022

Mitek Systems, Inc. (“Mitek,” the “Company,” “we,” “us,” and “our”) is a leading innovator of mobile image capture and digital identity verification solutions. Mitek is a software development company with expertise in artificial intelligence and machine learning. Mitek currently serves more than 7,800 financial services organizations and leading marketplace and financial technology (“fintech”) brands around the globe. Customers count on Mitek to deliver trusted and convenient online experiences, detect and reduce fraud, and document Know Your Customer (“KYC”) and Anti-Money Laundering (“AML”) regulatory compliance. The Company’s solutions are embedded in native mobile apps and web browsers to facilitate digital consumer experiences. Mitek’s identity verification and authentication technologies and services make it possible for banks, financial services organizations and the world’s leading marketplace and sharing platforms to verify an individual’s identity during digital transactions, allowing them to reduce risk and meet regulatory requirements. The Company’s advanced mobile deposit system enables secure, fast and convenient deposit services. Thousands of organizations use Mitek solutions to optimize the security of mobile check deposits, new account openings and more.

Mitek markets and sells its products and services worldwide through internal, direct sales teams located in the U.S., Europe, and Latin America as well as through channel partners. Our partner sales strategy includes channel partners who are financial services technology providers and identity verification providers. These partners integrate our products into their solutions to meet the needs of their customers, typically provisioning Mitek services through their respective platforms.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements of the Company as of December 31, 2022 have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and, accordingly, they do not include all information and footnote disclosures required by accounting principles generally accepted in the U.S. (“GAAP”). The Company believes the footnotes and other disclosures made in the financial statements are adequate for a fair presentation of the results of the interim periods presented. The financial statements include all adjustments (solely of a normal recurring nature) which are, in the opinion of management, necessary to make the information presented not misleading. You should read these financial statements and the accompanying notes in conjunction with the condensed consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2022, filed with the U.S. Securities and Exchange Commission (“SEC”) on July 31, 2023.

Results for the three months ended December 31, 2022 are not necessarily indicative of results for any other interim period or for a full fiscal year.

Principles of Consolidation

Principles of ConsolidationThe condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses, deferred taxes, and related disclosure of contingent assets and liabilities. On an ongoing basis, management reviews its estimates based upon currently available information. Actual results could differ materially from those estimates. These estimates include, but are not limited to, assessing the collectability of accounts receivable, estimation of the value of stock-based compensation awards, fair value of assets and liabilities acquired, impairment of goodwill, useful lives of intangible assets, fair value of debt derivatives, standalone selling price related to revenue recognition, contingent consideration, and income taxes.

Reclassifications and Revision

Reclassifications

A reclassification has been made to the prior periods’ condensed consolidated financial statements in order to conform to the current period presentation. Accrued interest payable was included in the other current liabilities line in the condensed consolidated balance sheet as of September 30, 2022, however, it has been presented separately in the condensed consolidated balance sheet as of December 31, 2022 so that the total of the other current liabilities line is less than five percent of total current liabilities.

Revision

Cost of revenue—services and other and research and development for the three months ended December 31, 2021 have been revised, as previously disclosed in Note 13 in the Annual Report on Form 10-K for the year ended September 30, 2022, filed with the SEC on July 31, 2023. The immaterial revision is made for consistency with the restatements of the three and six months ended March 31, 2022 and the three and nine months ended June 30, 2022.

Recently Adopted Accounting Pronouncements, Change in Significant Accounting Policy and Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

The Company did not adopt any new accounting pronouncements in the quarter ended December 31, 2022.

Change in Significant Accounting Policy

The Company’s significant accounting policies are disclosed in the Company’s audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2022, filed with the SEC on July 31, 2023. There have been no changes to these accounting policies through December 31, 2022.

Recently Issued Accounting Pronouncements

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference

Rate Reform on Financial Reporting (ASU 2020-04) and also issued subsequent amendments to the initial guidance (collectively, Topic 848). Topic 848 provides optional guidance for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. The Company will adopt Topic 848 when the relevant contracts

are modified upon transition to alternative reference rates. The Company does not expect the adoption of Topic 848 will have a material impact on the condensed consolidated financial statements.

No other new accounting pronouncement issued or effective during the three months ended December 31, 2022 had, or is expected to have, a material impact on the Company’s condensed consolidated financial statements.

Revenue Recognition

Nature of Goods and Services

The following is a description of principal activities from which the Company generates its revenue. Contracts with customers are evaluated on a contract-by-contract basis as contracts may include multiple types of goods and services as described below.

Software and Hardware

Software and hardware revenue is generated from on premise software license sales, as well as sales of hardware scanner boxes and on premise appliance products. Software is typically sold as a time-based license with a term of one to three years. For software license agreements that are distinct, the Company recognizes software license revenue upon delivery and after evidence of a contract exists. Hardware revenue is recognized at a point in time upon shipment and after evidence of a contract exists.

Services and Other

Services and other revenue is generated from the sale of software as a service (“SaaS”) products and services, maintenance associated with the sale of on premise software licenses and consulting and professional services. The Company recognizes professional services revenue over the period in which such services are performed. The Company’s SaaS offerings give customers the option to be charged upon their incurred usage in arrears (“Pay as You Go”), or commit to a minimum spend over their contracted period, with the ability to purchase unlimited additional transactions above the minimum during the contract term. Revenue related to Pay as You Go contracts are recognized based on the customer’s actual usage, in the period of usage. For contracts which include a minimum commitment, the Company is standing ready to provide as many transactions as desired by the customer throughout the contract term, and revenue is recognized on a ratable basis over the contract period including an estimate of usage above the minimum commitment. Usage above minimum commitment is estimated by looking at historical usage, expected volume, and other factors to project out for the remainder of the contract term. The estimated usage-based revenues are constrained to the amount the Company expects to be entitled to receive in exchange for providing access to its platform. If professional services are deemed to be distinct, revenue is recognized as services are performed. The Company does not view the signing of the contract or the provision of initial setup services as discrete earnings events that are distinct.

Significant Judgments in Application of the Guidance

The Company uses the following methods, inputs, and assumptions in determining amounts of revenue to recognize:

Identification of Performance Obligations

For contracts that contain multiple performance obligations, which include combinations of software licenses, maintenance, and services, the Company accounts for individual goods or services as a separate performance obligation if they are distinct. The good or service is distinct if the good or service is separately identifiable from other items in the arrangement and if a customer can benefit from it on its own or with other resources that are readily available to the customer. If these criteria are not met, the promised goods or services are accounted for as a combined performance obligation.

Determination of Transaction Price

The transaction price is determined based on the consideration to which the Company will be entitled in exchange for transferring products or services to the customer. The Company includes any fixed charges within its contracts as part of the total transaction price. To the extent that variable consideration is not constrained, the Company includes an estimate of the variable amount, as appropriate, within the total transaction price and updates its assumptions over the duration of the contract. As a practical expedient, the Company does not adjust the transaction price for the effects of a significant financing component if, at contract inception, the period between customer payment and the transfer of goods or services is expected to be one year or less.

Assessment of Estimates of Variable Consideration

Many of the Company’s contracts with customers contain some component of variable consideration; however, variable consideration will only be included in the transaction price to the extent it is probable that a significant reversal of revenues recognized will not occur when the uncertainty associated with the variable consideration is resolved. The Company may constrain the estimated transaction price in the event of a high degree of uncertainty as to the final consideration amount owed because of an extended length of time over which the fees may be adjusted or due to uncertainty surrounding collectability. The Company estimates variable consideration in its contracts primarily using the expected value method as the Company believes this method represents the most appropriate estimate for this consideration, based on historical usage trends, the individual contract considerations, and its best judgment at the time.

Allocation of Transaction Price

The transaction price, including any discounts, is allocated between separate goods and services in a contract that contains multiple performance obligations based on their relative standalone selling prices. The standalone selling prices are based on the prices at which the Company separately sells each good or service. For items that are not sold separately, the Company estimates the standalone selling prices using available information such as market conditions and internally approved pricing guidelines. In certain situations, primarily transactional SaaS revenue described above, the Company allocates variable consideration to a series of distinct goods or services within a contract. The Company allocates variable payments to one or more, but not all, of the distinct goods or services or to a series of distinct goods or services in a contract when (i) the variable payment relates specifically to the Company’s efforts to transfer the distinct good or service and (ii) the variable payment is for an amount that depicts the amount of consideration to which the Company expects to be entitled in exchange for transferring the promised goods or services to its customer.

Contract assets, reported within a separate line in current assets and the other non-current assets line in the condensed consolidated balance sheets, primarily result from when the right to consideration is conditional upon factors other than the passage of time. Contract liabilities primarily relate to advance consideration received from customers (deferred revenue), for which transfer of control occurs, and therefore revenue is recognized as services are provided. Contract balances are reported in a net contract asset or liability position on a contract-by-contract basis at the end of each reporting period.Contract costs included in other current and non-current assets on the condensed consolidated balance sheetsContract costs are amortized based on the transfer of goods or services to which the asset relates. The amortization period also considers expected customer lives and whether the asset relates to goods or services transferred under a specific anticipated contract. These costs are included in selling and marketing expenses in the condensed consolidated statement of operations and other comprehensive income

Fair Value Measurements and Disclosures

Level 1: Includes investments in U.S. Government and agency securities, which are valued based on recently executed transactions in the same or similar securities.•Level 2: Includes Convertible senior notes and corporate debt securities. Corporate debt securities are valued using quoted prices for similar assets or liabilities, quoted prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. On February 5, 2021, the Company issued the 2026 Notes as defined and further described in Note 9. Concurrently with the issuance of the 2026 Notes,

the Company entered into the Notes Hedge (as defined in Note 9) and Warrant Transactions (as defined in Note 9) which in combination are intended to reduce the potential dilution from the conversion of the 2026 Notes.

The fair value of the Notes Hedge and the embedded conversion derivative were estimated using a Black-Scholes model. Based on the fair value hierarchy, the Company classified the Notes Hedge and the embedded conversion derivative as Level 2 as significant inputs are observable, either directly or indirectly. The significant inputs and assumptions used in the models to calculate the fair value of the derivatives include the Common Stock price, exercise price of the derivatives, risk-free interest rate, volatility, annual coupon rate and remaining contractual term.

•Level 3: As of December 31, 2022, total acquisition-related contingent consideration of $6.3 million is recorded in acquisition-related contingent consideration, in the condensed consolidated balance sheets.