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Duration Gap is a balance-sheet risk measure that compares the interest-rate sensitivity of assets and liabilities. It is typically measured by the difference between asset duration and liability duration weighted by balance sizes and is used to hedge rate exposure and rebalance duration. The concept makes the interest-rate risk reduction versus hedging cost tradeoff explicit and supports policy or operational thresholds across planning, stress testing, and review cycles. Teams document assumptions, data sources, and update cadence so results remain comparable over time.

Duration Gap should be calculated with a stable numerator, denominator, and time window. Formula | Duration Gap = Asset duration - Liability duration adjusted for leverage | Use it to judge balance-sheet sensitivity to interest-rate changes. Time window | Use the same period for every comparison | Prevents artificial movement Segment | Calculate by plan, market, cohort, or owner when useful | Reveals where the change came from

The boundary of Duration Gap must be written before it is used as a KPI. Include | Recurring and comparable inputs that match the definition | Keeps trend analysis reliable Exclude | One-off, unmatched, or non-comparable items | Avoids inflated or misleading movement Document | Data source, owner, refresh timing, and exception rules | Makes reviews reproducible

Duration Gap changes because the underlying operating drivers change. Volume | More or fewer units, users, customers, or transactions | Explains scale effects Mix | Change in segment, plan, product, or channel composition | Explains quality of growth or decline Efficiency | Better conversion, retention, cost control, or process discipline | Explains operating improvement

Sets guardrails for hedge rate exposure and rebalance duration by interpreting the difference between asset duration and liability duration weighted by balance sizes under scenario analysis and stress tests. Signals when to adjust strategy because the interest-rate risk reduction versus hedging cost balance is shifting in current conditions. Aligns stakeholders by turning Duration Gap into a shared threshold for approvals and periodic reviews.

• Sets guardrails for hedge rate exposure and rebalance duration by interpreting the difference between asset duration and liability duration weighted by balance sizes under scenario analysis and stress tests.
• Signals when to adjust strategy because the interest-rate risk reduction versus hedging cost balance is shifting in current conditions.
• Aligns stakeholders by turning Duration Gap into a shared threshold for approvals and periodic reviews.

• Define calculation windows and inputs for Duration Gap before comparing periods or peers.
• Track leading indicators that move the difference between asset duration and liability duration weighted by balance sizes so decisions are proactive, not reactive.
• Pair Duration Gap with qualitative context to avoid one-number overconfidence.
• Use triggers and escalation paths so hedge rate exposure and rebalance duration changes happen on time.
• Revisit assumptions when business mix, regulation, or market conditions shift.

Do not read Duration Gap alone. Compare with companion metrics before changing budget or targets. Check whether the movement came from real performance or definition drift. Avoid optimizing the metric in a way that harms customer quality or long-term value.

• Compare with companion metrics before changing budget or targets.
• Check whether the movement came from real performance or definition drift.
• Avoid optimizing the metric in a way that harms customer quality or long-term value.

Read Duration Gap together with metrics that explain quality, scale, and risk. Growth metric | Shows direction | Explains whether the trend is improving Efficiency metric | Shows cost or effort | Explains whether the result is economical Risk metric | Shows volatility or concentration | Explains whether the result is durable

Example: A bank expects a steepening yield curve and reviews its duration mismatch. The team calculates the difference between asset duration and liability duration weighted by balance sizes, compares it to an internal threshold, and discusses the interest-rate risk reduction versus hedging cost implications. They decide to hedge rate exposure and rebalance duration with staged actions, document assumptions and data sources, and set a trigger for revisiting the decision. Over the next quarter, they monitor the metric alongside leading indicators and adjust the plan once the trigger is hit.

Compare Duration Gap with adjacent concepts before deciding. Duration Gap | Current concept | Use when the team needs the primary decision lens Adjacent metric or framework | Supporting lens | Use when the team needs evidence or process detail General vocabulary | Broad explanation | Use only for orientation, not final decision-making

• Duration Gap is a fixed target; in practice, thresholds depend on risk tolerance and context.
• Improving Duration Gap always means better performance; it can hide costs or tradeoffs.
• One snapshot is enough; trends and volatility often matter more for decisions.