(a) Assessment base for all insured depository institutions. Except as provided in paragraphs (b), (c), and (d) of this section, the assessment base for an insured depository institution shall equal the average consolidated total assets of the insured depository institution during the assessment period minus the average tangible equity of the insured depository institution during the assessment period.

(1) Average consolidated total assets defined and calculated. Average consolidated total assets are defined in the schedule of quarterly averages in the Consolidated Reports of Condition and Income, using either a daily averaging method or a weekly averaging method as described in paragraphs (a)(1)(i) or (ii) of this section. The amounts to be reported as daily averages are the sum of the gross amounts of consolidated total assets for each calendar day during the quarter divided by the number of calendar days in the quarter. The amounts to be reported as weekly averages are the sum of the gross amounts of consolidated total assets for each Wednesday during the quarter divided by the number of Wednesdays in the quarter. For days that an office of the reporting institution (or any of its subsidiaries or branches) is closed (e.g., Saturdays, Sundays, or holidays), the amounts outstanding from the previous business day will be used. An office is considered closed if there are no transactions posted to the general ledger as of that date. For institutions that begin operating during the calendar quarter, the amounts to be reported as daily averages are the sum of the gross amounts of consolidated total assets for each calendar day the institution was operating during the quarter divided by the number of calendar days the institution was operating during the quarter.

(i) Institutions that must report average consolidated total assets using a daily averaging method. All insured depository institutions that report $1 billion or more in quarter-end consolidated total assets on their March 31, 2011 Consolidated Report of Condition and Income or Thrift Financial Report (or successor report), and all institutions that become insured after March 31, 2011, shall report average consolidated total assets as of the close of business for each day of the calendar quarter.

(ii) Institutions that may report average consolidated total assets using a weekly averaging method. All insured depository institutions that report less than $1 billion in quarter-end consolidated total assets on their March 31, 2011, Consolidated Report of Condition and Income or Thrift Financial Report may report average consolidated total assets as an average of the balances as of the close of business on each Wednesday during the calendar quarter, or may at any time opt permanently to report average consolidated total assets on a daily basis as set forth in paragraph (a)(1)(i) of this section. Once an institution that reports average consolidated total assets using a weekly average reports average consolidated total assets equal to or greater than $1 billion for two consecutive quarters, it shall permanently report average consolidated total assets using daily averaging starting in the next quarter.

(iii) Mergers and consolidations. The average calculation of the assets of the surviving or resulting institution in a merger or consolidation shall include the assets of all the merged or consolidated institutions for the days in the quarter prior to the merger or consolidation, whether reported by the daily or weekly method.

(2) Average tangible equity defined and calculated. Tangible equity is defined as Tier 1 capital.

(i) Calculation of average tangible equity. Except as provided in paragraph (a)(2)(ii) of this section, average tangible equity shall be calculated using monthly averaging. Monthly averaging means the average of the three month-end balances within the quarter.

(ii) Alternate calculation of average tangible equity. Institutions that report less than $1 billion in quarter-end consolidated total assets on their March 31, 2011 Consolidated Reports of Condition and Income or Thrift Financial Reports may report average tangible equity using an end-of-quarter balance or may at any time opt permanently to report average tangible equity using a monthly average balance. An institution that reports average tangible equity using an end-of-quarter balance and reports average daily or weekly consolidated assets of $1 billion or more for two consecutive quarters shall permanently report average tangible equity using monthly averaging starting in the next quarter. Newly insured institutions shall report using monthly averaging.

(iii) Calculation of average tangible equity for the surviving institution in a merger or consolidation. For the surviving institution in a merger or consolidation, Tier 1 capital shall be calculated as if the merger occurred on the first day of the quarter in which the merger or consolidation occurred.

(3) Consolidated subsidiaries—(i) Reporting for insured depository institutions with consolidated subsidiaries that are not insured depository institutions. For insured institutions with consolidated subsidiaries that are not insured depository institutions, assets, including assets eliminated in consolidation, shall be calculated using a daily or weekly averaging method, corresponding to the daily or weekly averaging requirement of the parent institution. The Consolidated Reports of Condition and Income instructions in effect for the quarter for which data is being reported shall govern calculation of the average amount of subsidiaries' assets, including those assets eliminated in consolidation. An insured depository institution that reports average tangible equity using a monthly averaging method and that has subsidiaries that are not insured depository institutions shall use monthly average reporting for the subsidiaries. The monthly average data for these subsidiaries, however, may be calculated for the current quarter or for the prior quarter consistent with the method used to report average consolidated total assets and in conformity with Consolidated Reports of Condition and Income requirements. Once the method of reporting the subsidiaries' assets and tangible equity is chosen, however (current quarter or prior quarter), insured depository institutions cannot change the reporting method from quarter to quarter. An institution that reports consolidated assets and tangible equity using data for the prior quarter may switch to concurrent reporting on a permanent basis.

(ii) Reporting for insured depository institutions with consolidated insured depository subsidiaries. Insured depository institutions that consolidate with other insured depository institutions for financial reporting purposes shall report for the parent and for each subsidiary individually, daily average consolidated total assets or weekly average consolidated total assets, as appropriate under paragraph (a)(1)(i) or (ii) above, and tangible equity, without consolidating their insured depository institution subsidiaries into the calculations. Investments in insured depository institution subsidiaries should be included in total assets using the equity method of accounting.

(b) Assessment base for banker's banks—(1) Bankers bank defined. A banker's bank for purposes of calculating deposit insurance assessments shall meet the definition of banker's bank as that term is used in 12 U.S.C. 24. Banker's banks that have funds from government capital infusion programs (such as TARP and the Small Business Lending Fund), and stock owned by the FDIC resulting from banks failures, as well as non-bank-owned stock resulting from equity compensation programs, are not thereby excluded from the definition of banker's banks.

(2) Self-certification. Institutions that meet the requirements of paragraph (b)(1) of this section shall so certify to that effect each quarter on the Consolidated Reports of Condition and Income or Thrift Financial Report or successor report.

(3) Assessment base calculation for banker's banks. A banker's bank shall pay deposit insurance assessments on its assessment base as calculated in paragraph (a) of this section provided that it conducts 50 percent or more of its business with entities other than its parent holding company or entities other than those controlled (control has the same meaning as in section 3(w)(5) of the FDI Act) either directly or indirectly by its parent holding company. The assessment base will exclude the average (daily or weekly depending on how the institution calculates its average consolidated total assets) amount of reserve balances passed through to the Federal Reserve, the average amount of reserve balances held at the Federal Reserve for its own account (including all balances due from the Federal Reserve as described in the instructions to line 4 of Schedule RC-A of the Consolidated Report of Condition and Income as of December 31, 2010), and the average amount of the institution's federal funds sold, but in no case shall the amount excluded exceed the sum of the bank's average amount of total deposits of commercial banks and other depository institutions in the United States and the average amount of its federal funds purchased.

(c) Assessment base for custodial banks—(1) Custodial bank defined. A custodial bank for purposes of calculating deposit insurance assessments shall be an insured depository institution with previous calendar-year trust assets (fiduciary and custody and safekeeping assets, as described in the instructions to Schedule RC-T of the Consolidated Report of Condition and Income) of at least $50 billion or an insured depository institution that derived more than 50 percent of its total revenue (interest income plus non-interest income) from trust activity over the previous calendar year.

(2) Assessment base calculation for custodial banks. A custodial bank shall pay deposit insurance assessments on its assessment base as calculated in paragraph (a) of this section, but the FDIC will exclude from that assessment base the daily or weekly average (depending on how the bank reports its average consolidated total assets) of all asset types described in the instructions to lines 1, 2, and 3 of Schedule RC of the Consolidated Report of Condition and Income with a standardized approach risk weight of 0 percent, regardless of maturity, plus 50 percent of those asset types described in the instructions to lines 1, 2, and 3 of Schedule RC of the Consolidated Report of Condition and Income, with a standardized approach risk-weight greater than 0 and up to and including 20 percent, regardless of maturity, subject to the limitation that the daily or weekly average (depending on how the bank reports its average consolidated total assets) value of all assets that serve as the basis for a deduction under this section cannot exceed the daily or weekly average value of those deposits that are classified as transaction accounts in the instructions to Schedule RC-E of the Consolidated Report of Condition and Income and that are identified by the institution as being directly linked to a fiduciary or custodial and safekeeping account asset.

(d) Assessment base for insured branches of foreign banks. Average consolidated total assets for an insured branch of a foreign bank are defined as total assets of the branch (including net due from related depository institutions) in accordance with the schedule of assets and liabilities in the Report of Assets and Liabilities of U.S. Branches and Agencies of Foreign Banks as of the assessment period for which the assessment is being calculated, but measured using the definition for reporting total assets in the schedule of quarterly averages in the Consolidated Reports of Condition and Income, and calculated using the appropriate daily or weekly averaging method under paragraph (a)(1)(i) or (ii) of this section. Tangible equity for an insured branch of a foreign bank is eligible assets (determined in accordance with § 347.210 of the FDIC's regulations) less the book value of liabilities (exclusive of liabilities due to the foreign bank's head office, other branches, agencies, offices, or wholly owned subsidiaries) calculated on a monthly or end-of-quarter basis, according to the branch's size.

(e) Newly insured institutions. A newly insured institution shall pay an assessment for the assessment period during which it became insured. The FDIC will prorate the newly insured institution's assessment amount to reflect the number of days it was insured during the period.