Regulatory Capital Requirements (Tables)

9 Months Ended

Sep. 30, 2018

Banking And Thrift [Abstract]

Schedule of Capital Amounts and Ratios

The Company’s and the Bank’s capital amounts and ratios as of September 30, 2018 and December 31, 2017 are presented in the following table (dollars in thousands).

	Actual					Minimum capital requirement (1)					Minimum to be well-capitalized (2)
	Amount		Ratio			Amount		Ratio			Amount		Ratio
At September 30, 2018:
Total capital to risk-weighted assets:
CapStar Financial Holdings, Inc.	$	171,866		12.62	%	$	108,958		8.00	%	N/A		N/A
CapStar Bank		154,906		11.38			108,897		8.00		$	136,122		10.00
Tier I capital to risk-weighted assets:
CapStar Financial Holdings, Inc.		156,469		11.49			81,718		6.00		N/A		N/A
CapStar Bank		139,509		10.25			81,673		6.00			108,897		8.00
Common equity Tier 1 capital to risk weighted    assets:
CapStar Financial Holdings, Inc.		147,469		10.83			61,289		4.50		N/A		N/A
CapStar Bank		123,009		9.04			61,255		4.50			88,479		6.50
Tier I capital to average assets:
CapStar Financial Holdings, Inc.		156,469		11.02			56,770		4.00		N/A		N/A
CapStar Bank		139,509		9.83			56,760		4.00			70,950		5.00
At December 31, 2017:
Total capital to risk-weighted assets:
CapStar Financial Holdings, Inc.	$	156,434		12.52	%	$	99,932		8.00	%	N/A		N/A
CapStar Bank		142,396		11.40			99,928		8.00		$	124,909		10.00
Tier I capital to risk-weighted assets:
CapStar Financial Holdings, Inc.		142,534		11.41			74,949		6.00		N/A		N/A
CapStar Bank		128,496		10.29			74,946		6.00			99,928		8.00
Common equity Tier 1 capital to risk weighted    assets:
CapStar Financial Holdings, Inc.		133,703		10.70			56,212		4.50		N/A		N/A
CapStar Bank		112,165		8.98			56,209		4.50			81,191		6.50
Tier I capital to average assets:
CapStar Financial Holdings, Inc.		142,534		10.77			53,218		4.00		N/A		N/A
CapStar Bank		128,496		9.71			53,215		4.00			66,519		5.00

(1) For the calendar year 2018, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 1.875% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees.

(2) For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.