{"id":1266,"date":"2026-04-30T05:00:06","date_gmt":"2026-04-30T05:00:06","guid":{"rendered":"https:\/\/banking.deepdigitalventures.com\/blog\/?p=1266"},"modified":"2026-04-30T05:00:06","modified_gmt":"2026-04-30T05:00:06","slug":"securities-portfolio-maturity-tables-a-duration-risk-explainer","status":"publish","type":"post","link":"https:\/\/banking.deepdigitalventures.com\/blog\/securities-portfolio-maturity-tables-a-duration-risk-explainer\/","title":{"rendered":"Securities Portfolio Maturity Tables: A Duration Risk Explainer"},"content":{"rendered":"\n<p>A securities portfolio maturity table is a public filing view of when a bank\u2019s bonds and mortgage-backed securities are scheduled to mature, reprice, or return principal. It matters because a portfolio that looks stable at book value can become a liquidity or capital issue when interest rates move. The first read is simple: check how much comes due within one year, compare amortized cost with fair value, and compare that fair-value gap with capital.<\/p>\n\n\n\n<p>The maturity table is not the same thing as duration. Final maturity tells you when cash is legally due. Duration estimates price sensitivity to rate changes. Schedule RC-B gives the public a comparable proxy for rate risk, not a full option-adjusted duration model. That is why the table is best used as an early warning screen: it shows where to ask harder questions about extension risk, liquidity, and capital capacity.<\/p>\n\n\n\n<p>If you are a fintech founder choosing a sponsor bank, a bank credit analyst setting a watch list, a financial journalist checking a rate-risk story, or a small-bank board member reviewing ALCO materials, the maturity table answers one practical question: could this securities portfolio turn a rate move into a liquidity or capital problem?<\/p>\n\n\n\n\n\n\n\n<p>A bank securities portfolio can look quiet on the balance sheet until rates move. The useful first read is not a market forecast. It is a filing-based check of FFIEC Call Report Schedule RC-B[1], the bank\u2019s AFS and HTM split, the one-year-or-less maturity bucket, and Schedule RC-R capital ratios. That check tells you whether the bank has short cash flows, long fixed-rate exposure, or a fair-value gap that deserves a harder question.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Key Takeaways<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Read the maturity table as a liquidity and rate-risk screen, not as a complete duration model.<\/li>\n<li>The one-year-or-less bucket shows how much securities cash flow is near enough to help with funding pressure.<\/li>\n<li>The amortized-cost-to-fair-value gap shows how much market-value pressure may be hidden by accounting treatment.<\/li>\n<li>A long book is not automatically weak. It becomes a concern when near-term cash flow is low, deposits are less stable, securities are pledged, and the fair-value gap is large relative to capital.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What Maturity Tables Show<\/h2>\n\n\n\n<p>Schedule RC-B is the core public schedule for securities. The FFIEC 031 and 041 Call Report instructions dated December 2025[2] require held-to-maturity securities to show amortized cost and fair value, and available-for-sale debt securities to show amortized cost and fair value. That side-by-side view matters because HTM accounting can keep market-value pressure out of balance-sheet capital while still leaving the fair value visible in the schedule.<\/p>\n\n\n\n<p>The official maturity and repricing buckets are more specific than \u201cshort\u201d and \u201clong.\u201d For non-mortgage debt securities and mortgage pass-through securities, the memorandum items use six buckets: three months or less, over three months through 12 months, over one year through three years, over three years through five years, over five years through 15 years, and over 15 years. For other mortgage-backed securities, including CMOs, REMICs, and stripped MBS, the table uses expected average life of three years or less or over three years.<\/p>\n\n\n\n<p>The first hard test is the one-year-or-less bucket. In the instructions, HTM debt securities in that item are reported at amortized cost, while AFS debt securities are reported at fair value. A bank with a small one-year-or-less bucket may still have liquidity, but the securities ladder itself is not providing much near-term cash flow.<\/p>\n\n\n\n<p>The second hard test is capital capacity. Under 12 CFR 324.403[3], an FDIC-supervised institution is \u201cwell capitalized\u201d only if it has a total risk-based capital ratio of at least 10.0%, a tier 1 risk-based capital ratio of at least 8.0%, a common equity tier 1 ratio of at least 6.5%, and a leverage ratio of at least 5.0%, and is not subject to a covered capital order or directive. A maturity table does not prove capital strength, but it shows what fair-value pressure should be compared against.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Question<\/th><th>Public filing field to inspect<\/th><th>Why it matters<\/th><\/tr><\/thead><tbody><tr><td>How much reprices or matures soon?<\/td><td>Schedule RC-B Memorandum item 2.d, debt securities with remaining maturity of one year or less<\/td><td>Low near-term cash flow makes the bank more dependent on deposits, borrowings, or sales.<\/td><\/tr><tr><td>How much fair-value pressure is visible?<\/td><td>Schedule RC-B HTM amortized cost versus fair value, and AFS amortized cost versus fair value<\/td><td>The gap shows what the market price says about rate exposure.<\/td><\/tr><tr><td>How much capital room exists?<\/td><td>Schedule RC-R capital components and ratios<\/td><td>Fair-value pressure should be compared with tier 1 capital and leverage capacity.<\/td><\/tr><tr><td>Is this a smaller domestic bank?<\/td><td>FFIEC 051 instructions dated December 2025[4]<\/td><td>Use the right Call Report form before comparing fields across banks.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Connect Maturity To Liquidity<\/h2>\n\n\n\n<p>A bank may hold securities for earnings, on-balance-sheet liquidity, collateral, pledging capacity, or interest-rate management. The maturity table becomes useful when it is read with deposit liabilities, quarterly averages, borrowing data, and capital. A long securities book is not automatically weak. A long securities book paired with deposit runoff, pledged collateral, and a thin capital buffer is a different fact pattern.<\/p>\n\n\n\n<p>Use a simple four-step workflow before calling the portfolio \u201csafe\u201d or \u201crisky.\u201d First, separate HTM from AFS. Second, calculate the fair-value gap by comparing amortized cost with fair value for each category. Third, divide the one-year-or-less securities bucket by total securities to see how much cash flow is inside one year. Fourth, compare the fair-value gap with tier 1 capital and the bank\u2019s funding profile. The <a href=\"https:\/\/banking.deepdigitalventures.com\/\">peer comparison view<\/a> is most useful at this step because a bank\u2019s maturity ladder only makes sense against similar balance sheets.<\/p>\n\n\n\n<p>Here is a worked example using hypothetical Call Report numbers.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Calculation<\/th><th>Inputs<\/th><th>Result<\/th><th>Read<\/th><\/tr><\/thead><tbody><tr><td>HTM fair-value gap<\/td><td>$240 million amortized cost minus $205 million fair value<\/td><td>$35 million<\/td><td>Market value is below book value.<\/td><\/tr><tr><td>AFS fair-value gap<\/td><td>$180 million amortized cost minus $170 million fair value<\/td><td>$10 million<\/td><td>AFS pressure is already closer to capital treatment.<\/td><\/tr><tr><td>Total fair-value gap<\/td><td>$35 million plus $10 million<\/td><td>$45 million<\/td><td>The combined gap is the number to compare with capital.<\/td><\/tr><tr><td>Gap to tier 1 capital<\/td><td>$45 million divided by $160 million<\/td><td>28.1%<\/td><td>This is a meaningful screen for deeper review.<\/td><\/tr><tr><td>One-year securities cash flow<\/td><td>$40 million divided by $410 million total securities exposure<\/td><td>9.8%<\/td><td>The portfolio has limited near-term runoff.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>That example does not prove the bank is unsafe. It does give an analyst a next question for management: what is the plan if deposits decline faster than the $40 million one-year securities bucket rolls off? Good answers usually name available cash, unused borrowing capacity, unpledged securities, deposit behavior, and whether management would sell AFS securities at a loss.<\/p>\n\n\n\n<p>The thresholds below are internal screening heuristics, not regulatory limits. We use them because they force a second look when the portfolio has limited near-term cash flow or when unrealized loss pressure is large enough to affect management choices. They break down for banks with unusually stable core deposits, strong unused borrowing capacity, high cash balances, unusual tax positions, or securities that are already pledged for a specific liquidity plan.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the one-year-or-less bucket is below 10% of securities in your own screen, ask for the bank\u2019s liquidity sources before giving credit for the whole portfolio.<\/li>\n<li>If the fair-value gap exceeds 25% of tier 1 capital in your own screen, read the capital schedule before assuming capital can absorb a sale or transfer decision.<\/li>\n<li>If pledged securities are material, ask how much of the portfolio is actually available for liquidity rather than already tied to public deposits, borrowings, or payment-system needs.<\/li>\n<\/ul>\n\n\n\n<p>In sponsor-bank diligence, the common red flag is not merely \u201clong securities.\u201d It is a long fixed-rate book used as a comfort point while deposits are concentrated, brokered funding is rising, or fintech program balances can move quickly. A common false positive is the conservative community bank with a long municipal or agency book, sticky local deposits, high on-balance-sheet cash, low loan growth, and management that can clearly explain shock results. A strong long-duration book usually has stable funding, unpledged collateral, transparent ALCO limits, stress-tested cash sources, and no need to sell securities into a loss to meet ordinary funding pressure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Duration Is Broader Than Final Maturity<\/h2>\n\n\n\n<p>Final maturity is only a blunt signal. A 15-year bullet Treasury, a GNMA pass-through, a Fannie Mae MBS, a Freddie Mac CMO, and a municipal bond with a call feature can behave differently when rates move. The public filing separates some of this by security type and by maturity or repricing bucket, but it is not a full duration model.<\/p>\n\n\n\n<p>Mortgage-backed securities need special care because principal cash flows depend on prepayments. The instructions for other mortgage-backed securities use expected average life, not contractual final maturity. That is why a CMO or REMIC can sit in the three-years-or-less expected average life bucket even when legal final maturity is much longer. Analysts should treat the bucket as a prompt for prepayment and extension-risk questions, not as a promise of cash on a fixed date.<\/p>\n\n\n\n<p>Callable bonds create the opposite problem. When rates fall, the issuer may call the bond and force reinvestment at lower yields. When rates rise, the call option may become worthless to the issuer, and the bond behaves more like a longer fixed-rate asset. A maturity table can show the outside date, but it does not show option-adjusted duration, convexity, or the bank\u2019s own shock scenarios.<\/p>\n\n\n\n<p>The practical rule is to split the review into two layers. Use the public table for the comparable screen. Then ask for the bank\u2019s internal interest-rate-risk report, including economic value of equity, net interest income shock, prepayment assumptions, and policy limits. A public maturity table tells you where to ask. It does not replace the model used by the bank\u2019s asset-liability committee.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Use Peer And Trend Context<\/h2>\n\n\n\n<p>A maturity profile should be compared with prior quarters and similar banks. A move from a laddered book into the over-five-years-through-15-years and over-15-years buckets matters more if deposits are also becoming less stable, loan growth is using cash, or borrowings are rising. For a sponsor-bank diligence file, pair the securities read with deposits, loans, past due and nonaccrual assets, income, charge-offs and recoveries, allowances, and capital.<\/p>\n\n\n\n<p>Trend context is where original judgment matters most. A one-quarter increase in longer securities may be harmless if it follows a merger, a liquidity build, or a temporary balance-sheet repositioning. The same move is more concerning if it appears after deposit outflows, while unrealized losses are growing, or when management is using \u201chigh-quality securities\u201d as a broad answer without showing available borrowing capacity and pledge status.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Diligence Checks<\/h2>\n\n\n\n<p>Keep identity and enforcement checks in the file, but do not let them crowd out the maturity analysis. Use FDIC BankFind Suite[5] and the Federal Reserve\u2019s National Information Center[6] to confirm the legal institution, regulator, holding-company structure, and active status. Use FDIC, OCC, and Federal Reserve enforcement pages[7][8][9] to check for orders affecting capital, liquidity, growth, third-party risk, or board oversight. Do not infer a bank\u2019s current condition from a headline; tie any conclusion to a Call Report schedule or a dated public order.<\/p>\n\n\n\n<p>The decision rule is simple enough to use tomorrow: if a bank has a long securities maturity profile, a large fair-value gap against tier 1 capital, and limited one-year securities cash flow, move the bank to a deeper review before relying on it for sponsor-bank capacity, credit exposure, or board-level liquidity comfort.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<p><strong>How do I read a bank securities maturity table?<\/strong> Start with the one-year-or-less bucket, then compare amortized cost with fair value, then compare the gap with capital and funding. The maturity ladder is most useful when it is read with deposit stability, borrowings, pledged securities, and peer trends.<\/p>\n\n\n\n<p><strong>What does RC-B item 2.d tell me?<\/strong> It tells you how much debt securities exposure has a remaining maturity of one year or less. A low number means the securities portfolio itself is not producing much near-term cash flow, even if the bank has other liquidity sources.<\/p>\n\n\n\n<p><strong>Is a long maturity table always bad?<\/strong> No. A long maturity table can be acceptable if the bank has stable funding, strong capital, unpledged liquidity, and documented interest-rate-risk limits. The concern is the combination of long fixed-rate assets, deposit pressure, low near-term cash flow, and a fair-value gap that is large compared with capital.<\/p>\n\n\n\n<p><strong>Why not just use book yield?<\/strong> Book yield explains earnings on the existing portfolio. It does not show what the securities are worth today or how much cash the bank can raise without selling at a loss. Fair value and maturity memoranda answer different questions than yield.<\/p>\n\n\n\n<p><strong>What is the fastest public screen?<\/strong> Pull the securities schedule, calculate the HTM and AFS fair-value gap, divide the one-year-or-less bucket by total securities, and compare the gap with tier 1 capital. Then read deposit and borrowing schedules before drawing a liquidity conclusion.<\/p>\n\n\n\n<p><strong>Can a maturity table replace an internal duration report?<\/strong> No. Public maturity buckets do not capture option-adjusted duration, prepayment behavior, convexity, deposit beta assumptions, or management\u2019s rate-shock policy limits. They are the public starting point for deciding what to ask next.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>FFIEC Central Data Repository public Call Report access: https:\/\/cdr.ffiec.gov\/public\/<\/li>\n<li>FDIC FFIEC 031 and 041 Call Report instructions, December 2025: https:\/\/www.fdic.gov\/bank-financial-reports\/ffiec-reports-condition-and-income-instructions-ffiec-031-and-041-report-3<\/li>\n<li>12 CFR 324.403, FDIC prompt corrective action capital categories: https:\/\/www.ecfr.gov\/current\/title-12\/chapter-III\/subchapter-B\/part-324\/subpart-H\/section-324.403<\/li>\n<li>FDIC FFIEC 051 Call Report instructions, December 2025: https:\/\/www.fdic.gov\/bank-financial-reports\/ffiec-reports-condition-and-income-instructions-ffiec-051-report-form-1<\/li>\n<li>FDIC BankFind Suite institution lookup: https:\/\/banks.data.fdic.gov\/bankfind-suite<\/li>\n<li>Federal Reserve National Information Center institution lookup: https:\/\/www.ffiec.gov\/npw<\/li>\n<li>FDIC enforcement decisions and orders database: https:\/\/orders.fdic.gov\/s\/<\/li>\n<li>OCC enforcement actions page: https:\/\/www.occ.gov\/topics\/laws-and-regulations\/enforcement-actions\/index-enforcement-actions.html<\/li>\n<li>Federal Reserve enforcement actions database: https:\/\/www.federalreserve.gov\/supervisionreg\/enforcementactions.htm<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Use securities portfolio maturity tables to understand duration risk, reinvestment pressure, liquidity, and bank balance sheet sensitivity.<\/p>\n","protected":false},"author":3,"featured_media":1968,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"Securities Portfolio Maturity Tables: Duration Risk Explainer","_seopress_titles_desc":"Learn how to read bank securities maturity tables, RC-B one-year cash flow, fair-value gaps, and capital capacity as a practical duration and liquidity risk screen.","_seopress_robots_index":"","footnotes":""},"categories":[13],"tags":[],"class_list":["post-1266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-regulatory-data"],"_links":{"self":[{"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/posts\/1266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/comments?post=1266"}],"version-history":[{"count":5,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/posts\/1266\/revisions"}],"predecessor-version":[{"id":2033,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/posts\/1266\/revisions\/2033"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/media\/1968"}],"wp:attachment":[{"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/media?parent=1266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/categories?post=1266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/banking.deepdigitalventures.com\/blog\/wp-json\/wp\/v2\/tags?post=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}