Condensed financial statements of the parent company only (Tables)
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12 Months Ended |
Dec. 31, 2025 |
| Condensed Financial Information Disclosure [Abstract] |
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| Schedule of Condensed Balance Sheet |
| | | | | | | | | | The Bank of N.T. Butterfield & Son Limited (parent company only) | | | | Condensed Balance Sheets | | | | (In thousands of US dollars) | | | | As at | | December 31, 2025 | December 31, 2024 | | Assets | | | | Cash and demand deposits with banks - Non-interest-bearing | 42,328 | | 36,383 | | | Demand deposits with banks - Interest-bearing | 39,026 | | 37,645 | | | Cash equivalents - Interest-bearing | 500,808 | | 725,121 | | | Cash and cash equivalents | 582,162 | | 799,149 | | | Securities purchased under agreements to resell | — | | 90,674 | | | Short-term investments | 194,658 | | 220,055 | | | Investments (none of the investment securities are intrinsically tax-exempt) | | | | | | Available-for-sale (amortized cost: $1,593,811 (2024: 1,391,401)) | 1,565,021 | | 1,323,837 | | Held-to-maturity (fair value: $969,388 (2024: $1,015,441)) | 1,110,056 | | 1,210,265 | | | Total investment in securities | 2,675,077 | | 2,534,102 | | | Net assets of subsidiaries - Banks | 625,464 | | 588,843 | | | Net assets of subsidiaries - Non-banks | 76,001 | | 63,169 | | | Loans to third parties, net of allowance for credit losses | 1,444,655 | | 1,578,547 | | | | | | Loans to subsidiaries - Non-banks | 32,445 | | 31,847 | | | | | | | | | | | | | | | | | | | | | | | | Other assets, including accrued interest, premises, equipment and computer software, equity method investments, receivables from subsidiaries and other real estate owned | 234,140 | | 229,716 | | | Total assets | 5,864,602 | | 6,136,102 | | | | | | Liabilities | | | | Deposits | | | | Non-interest bearing | 1,669,092 | | 1,600,902 | | | Interest bearing | 2,912,504 | | 3,272,022 | | | Total deposits | 4,581,596 | | 4,872,924 | | | | | | Employee benefit plans | 84,456 | | 83,578 | | | | | | | | | Other liabilities, including accrued interest and payables to subsidiaries | 56,699 | | 60,063 | | | Total other liabilities | 141,155 | | 143,641 | | | Long-term debt | — | | 98,725 | | | Total liabilities | 4,722,751 | | 5,115,290 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Total shareholders’ equity | 1,141,851 | | 1,020,812 | | | Total liabilities and shareholders’ equity | 5,864,602 | | 6,136,102 | |
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| Schedule of Condensed Statement of Operations |
| | | | | | | | | | | | | The Bank of N.T. Butterfield & Son Limited (parent company only) | | | | | Condensed Statements of Operations | | | | | (In thousands of US dollars) | | | | | Year ended | | December 31, 2025 | December 31, 2024 | December 31, 2023 | | Non-interest income | | | | | | | | | Banking | 28,937 | | 28,480 | | 26,242 | | | Foreign exchange revenue | 12,147 | | 10,699 | | 11,253 | | | | | | | Custody and other administration services | 7,602 | | 7,256 | | 6,830 | | | Other non-interest income | 1,241 | | 829 | | 1,345 | | | Dividends from subsidiaries - Banks | 184,914 | | 154,111 | | 100,000 | | | Dividends from subsidiaries - Non-banks | 30,200 | | 20,521 | | 22,973 | | | Total non-interest income | 265,041 | | 221,896 | | 168,643 | | | Interest income | | | | | Interest and fees on loans | 111,492 | | 121,204 | | 129,626 | | | Investments (none of the investment securities are intrinsically tax-exempt) | 75,302 | | 56,279 | | 50,219 | | | Cash and cash equivalents, securities purchased under agreements to resell and short-term investments | 29,561 | | 52,935 | | 43,690 | | | Total interest income | 216,355 | | 230,418 | | 223,535 | | | Interest expense | | | | | Deposits | 41,578 | | 54,271 | | 34,064 | | | Long-term debt | 3,681 | | 5,485 | | 8,091 | | | Securities sold under agreements to repurchase | 35 | | 106 | | 66 | | | Total interest expense | 45,294 | | 59,862 | | 42,221 | | | Net interest income before provision for credit losses | 171,061 | | 170,556 | | 181,314 | | | Provision for credit (losses) recoveries | 2,725 | | (1,834) | | (4,755) | | | Net interest income after provision for credit losses | 173,786 | | 168,722 | | 176,559 | | | Net gains (losses) on equity securities | — | | — | | 46 | | | | | | | | | | | Net gains (losses) on other real estate owned | — | | 50 | | (40) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Net other gains (losses) | 22 | | 35 | | 4,005 | | | Total other gains (losses) | 22 | | 85 | | 4,011 | | | Total net revenue | 438,849 | | 390,703 | | 349,213 | | | Non-interest expense | | | | | Salaries and other employee benefits | 67,305 | | 65,372 | | 68,779 | | | Technology and communications | 34,962 | | 34,073 | | 32,241 | | | Professional and outside services | 35,447 | | 33,488 | | 32,959 | | | Property | 11,831 | | 11,300 | | 10,831 | | | Indirect taxes | 16,128 | | 15,768 | | 15,269 | | | Non-service employee benefits expense | 5,335 | | 3,972 | | 5,645 | | | Marketing | 3,624 | | 3,606 | | 3,194 | | | Amortization of intangible assets | 169 | | 169 | | 169 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other expenses | 9,969 | | 9,466 | | 10,049 | | | Total non-interest expense | 184,770 | | 177,214 | | 179,136 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Net income before equity in undistributed earnings of subsidiaries | 254,079 | | 213,489 | | 170,077 | | | Equity in undistributed earnings of subsidiaries | (22,137) | | 2,827 | | 55,415 | | | Net income | 231,942 | | 216,316 | | 225,492 | | | Other comprehensive income, net of tax | 91,260 | | 14,783 | | 67,254 | | | Total comprehensive income | 323,202 | | 231,099 | | 292,746 | |
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| Schedule of Condensed Statements of Cash Flows |
| | | | | | | | | | | | | | The Bank of N.T. Butterfield & Son Limited (parent company only) | | | | | | Condensed Statements of Cash Flows | | | | | | (In thousands of US dollars) | | | | | | Year ended | | | December 31, 2025 | December 31, 2024 | December 31, 2023 | | | Cash flows from operating activities | | | | | | | | | | | | | | | | Net income | 231,942 | | 216,316 | | 225,492 | | | | Adjustments to reconcile net income to operating cash flows | | | | | | Depreciation and amortization | 15,818 | | 16,628 | | 14,792 | | | | Provision for credit losses (recoveries) | (2,725) | | 1,834 | | 4,755 | | | | Share-based payments and settlements | 22,246 | | 21,003 | | 20,812 | | | | | | | | | Net change in equity securities at fair value | — | | — | | 236 | | | | | | | | | | | | | | | | | | | | | | | | Net (gains) losses on other real estate owned | — | | (50) | | 40 | | | | (Increase) decrease in carrying value of equity method investments | (112) | | 483 | | 313 | | | | Dividends received from equity method investments | — | | — | | 5,096 | | | | | | | | | Equity in undistributed earnings of subsidiaries | 22,137 | | (2,827) | | (55,415) | | | | | | | | | Changes in operating assets and liabilities | | | | | | (Increase) decrease in accrued interest receivable and other assets | 263 | | (2,549) | | 10,626 | | | | Increase (decrease) in employee benefit plans, accrued interest payable and other liabilities | (1,820) | | (13,456) | | 10,955 | | | | Cash provided by (used in) operating activities | 287,749 | | 237,382 | | 237,702 | | | | | | | | | Cash flows from investing activities | | | | | | (Increase) decrease in securities purchased under agreements to resell having original maturities of 3 months of less | 90,674 | | 96,600 | | (127,403) | | | | | | | | | | | | | | Short-term investments other than restricted cash: proceeds from maturities and sales | 326,927 | | 781,459 | | 357,451 | | | | Short-term investments other than restricted cash: purchases | (302,226) | | (417,695) | | (869,466) | | | | | | | | | Available-for-sale investments: proceeds from maturities and pay downs | 117,277 | | 156,134 | | 131,261 | | | | Available-for-sale investments: purchases | (320,255) | | (694,620) | | (41,426) | | | | Held-to-maturity investments: proceeds from maturities and pay downs | 100,789 | | 99,962 | | 112,348 | | | | | | | | | Net (increase) decrease in loans to third parties | 137,047 | | 136,147 | | 117,772 | | | | | | | | | Net (increase) decrease in loans to non-bank subsidiaries | (597) | | 2,693 | | 23,515 | | | | Additions to premises, equipment and computer software | (11,801) | | (8,937) | | (13,267) | | | | Proceeds from sale of other real estate owned | — | | 588 | | 646 | | | | Injection of capital in subsidiary | (430) | | — | | (58,477) | | | | Return of capital from a subsidiary | — | | (1,878) | | — | | | | | | | | | | | | | | Cash provided by (used in) investing activities | 137,405 | | 150,453 | | (367,046) | | | | | | | | | | | | |
| | | | | | | | | | | | | | The Bank of N.T. Butterfield & Son Limited (parent company only) | | | | | | Condensed Statements of Cash Flows | | | | | | (In thousands of US dollars) | | | | | | Year ended | | | December 31, 2025 | December 31, 2024 | December 31, 2023 | | | Cash flows from financing activities | | | | | | Net increase (decrease) in deposits | (326,738) | | 281,518 | | (147,941) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Repayment of long-term debt | (100,000) | | — | | (75,000) | | | | Common shares repurchased | (146,686) | | (155,305) | | (88,590) | | | | | | | | | | | | | | | | | | | Cash dividends paid on common shares | (77,723) | | (79,581) | | (86,186) | | | | | | | | | | | | | | Cash provided by (used in) financing activities | (651,147) | | 46,632 | | (397,717) | | | | | | | | | Net increase (decrease) in cash, cash equivalents and restricted cash | (225,993) | | 434,467 | | (527,061) | | | | Cash, cash equivalents and restricted cash: beginning of year | 818,299 | | 383,832 | | 910,893 | | | | Cash, cash equivalents and restricted cash: end of year | 592,306 | | 818,299 | | 383,832 | | | | | | | | | Components of cash, cash equivalents and restricted cash at end of year | | | | | Cash and cash equivalents | 582,162 | | 799,149 | | 370,484 | | | | Restricted cash included in short-term investments on the consolidated balance sheets | 10,144 | | 19,150 | | 13,348 | | | | Total cash, cash equivalents and restricted cash at end of year | 592,306 | | 818,299 | | 383,832 | | | | | | | | | Supplemental disclosure of cash flow information | | | | | | Cash interest paid | 47,883 | | 58,864 | | 39,412 | | | | | | | | | Supplemental disclosure of non-cash items | | | | | | Transfer to (out of) other real estate owned | — | | 87 | | 336 | | | | | | | | | Initial recognition of right-of-use assets and operating lease liabilities | 77 | | — | | — | | | | | | | |
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