Finance category

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Swap Breakage Calculator

Unwinding an interest rate swap mid-life triggers breakage cost. This calculator estimates the unwind value based on rate moves and time remaining.

Swap notional

Fixed rate paid

Current market rate

Years remaining

Discount rate

Breakage value (+ = you pay)

-$649,422

Spread (fixed − market)

-150

bps

Annual $ spread

-$150,000

How the math works

Breakage value = PV of (fixed − market) × notional over remaining years. If spread is positive, you pay; negative, you receive.

Swap breakage is identical in concept to yield maintenance on prepayment — lender recovers the lost yield via cash now. Sized in bps, not rate terms.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Swap Breakage Calculator is built to give a quick, browser-based estimate for swap breakage. Unwinding an interest rate swap mid-life triggers breakage cost. This calculator estimates the unwind value based on rate moves and time remaining. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the swap breakage result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this swap breakage estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter swap notional.
Enter fixed rate paid.
Enter current market rate.
Enter years remaining.
Read estimated breakage cost.

Frequently Asked Questions

When does breakage apply?

Any time you want to unwind a swap before maturity — refi, sale, or just hedging exit. Breakage can be huge if rates moved significantly against your hedge.

Cost or gain?

Depends on direction. If your fixed rate > current market rate, you pay breakage (you locked in unfavorable rate). If fixed < market, counterparty pays you.

How to avoid?

Match swap tenor to loan tenor. Build in early-unwind optionality (swaption). Or accept breakage as part of the refi economics — sometimes cheaper than continuing.

How does this interact with the rest of the capital stack?

Each tier of the stack affects the next. Senior debt constrains LTC and DSCR. Mezz and pref consume equity spread. Interest rate hedges protect DSCR but cost premium. Always model the full stack holistically — optimizing one tier alone often degrades another. Institutional underwriters run three or four scenarios across the stack before committing capital.