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REGULATORY MATTERS (Tables)

12 Months Ended

Dec. 31, 2020

REGULATORY MATTERS

Capital Ratios and Amounts

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​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​	For capital adequacy				​	To be well-capitalized
​	​	​	​	​	​	​	For capital adequacy				​	purposes plus Capital				​	under prompt
​	​	Actual				​	purposes				​	Conservation Buffer				​	corrective action
(000’s omitted)		Amount			Ratio		Amount			Ratio		Amount			Ratio		Amount			Ratio
Community Bank System, Inc.:		​					​					​					​				​
2020		​					​					​					​				​
Tier 1 Leverage ratio	​	$	1,314,864		10.16	%	$	517,736		4.00	%	​	​		​	​	$	647,169		5.00	%
Tier 1 risk-based capital	​		1,314,864		18.99	%		415,472		6.00	%	$	588,585		8.50	%	​	553,962		8.00	%
Total risk-based capital	​		1,375,704		19.87	%		553,962		8.00	%		727,075		10.50	%	​	692,453		10.00	%
Common equity tier 1 capital	​		1,239,754		17.90	%		311,604		4.50	%		484,717		7.00	%	​	450,094		6.50	%
2019	​		​			​		​			​		​				​	​			​
Tier 1 Leverage ratio	​	$	1,148,336		10.80	%	$	425,431		4.00	%	​	​		​	​	$	531,788		5.00	%
Tier 1 risk-based capital	​		1,148,336		17.23	%		399,834		6.00	%	$	566,432		8.50	%	​	533,112		8.00	%
Total risk-based capital	​		1,198,724		17.99	%		533,112		8.00	%		699,710		10.50	%	​	666,390		10.00	%
Common equity tier 1 capital	​		1,073,281		16.11	%		299,876		4.50	%		466,473		7.00	%	​	433,154		6.50	%
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Community Bank, N.A.:	​					​					​						​				​
2020	​					​					​						​				​
Tier 1 Leverage ratio	​	$	1,028,285		7.98	%	$	515,552		4.00	%	​	​		​	​	$	644,440		5.00	%
Tier 1 risk-based capital	​		1,028,285		14.98	%		411,880		6.00	%	$	583,497		8.50	%	​	549,174		8.00	%
Total risk-based capital	​		1,089,125		15.87	%		549,174		8.00	%		720,791		10.50	%	​	686,467		10.00	%
Common equity tier 1 capital	​		1,028,175		14.98	%		308,910		4.50	%		480,527		7.00	%	​	446,204		6.50	%
2019	​		​			​		​			​						​	​			​
Tier 1 Leverage ratio	​	$	910,364		8.61	%	$	422,882		4.00	%	​	​		​	​	$	528,603		5.00	%
Tier 1 risk-based capital	​		910,364		13.79	%		396,064		6.00	%	$	561,091		8.50	%	​	528,086		8.00	%
Total risk-based capital	​		960,752		14.55	%		528,086		8.00	%		693,113		10.50	%	​	660,107		10.00	%
Common equity tier 1 capital	​		910,309		13.79	%		297,048		4.50	%		462,075		7.00	%	​	429,070		6.50	%

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- References

No definition available.

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- Definition

Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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