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Document and Entity Information
Dec. 02, 2021
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001626450
Document Type 8-K
Document Period End Date Dec. 02, 2021
Entity Registrant Name BigCommerce Holdings, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-39423
Entity Tax Identification Number 46-2707656
Entity Address, Address Line One 11305 Four Points Drive
Entity Address, Address Line Two Building II
Entity Address, Address Line Three Third Floor
Entity Address, City or Town Austin
Entity Address, State or Province TX
Entity Address, Postal Zip Code 78726
City Area Code (512)
Local Phone Number 865-4500
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Series 1 Common Stock, $ 0.0001 par value per share
Trading Symbol BIGC
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period true