Weighted Average Life (WAL) Calculator
WAL of a bond or ABS from its principal repayment schedule — the principal-weighted mean repayment time.
Formula
WAL weights only principal (ignoring interest), making it the standard maturity measure for amortizers, ABS and sinking-fund bonds — and the tenor used to pick the pricing benchmark. Faster prepayments shorten WAL; defaults with recovery lags extend it.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Need weighted average life calculator results fast? Analysts, founders, traders and finance professionals use the Weighted Average Life Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Weighted Average Life (WAL) Calculator
WAL of a bond or ABS from its principal repayment schedule — the principal-weighted mean repayment time. WAL weights only principal (ignoring interest), making it the standard maturity measure for amortizers, ABS and sinking-fund bonds — and the tenor used to pick the pricing benchmark. Faster prepayments shorten WAL; defaults with recovery lags extend it. The governing relationship is WAL = Σ tᵢ·Pᵢ / Σ Pᵢ. The Weighted Average Life Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Weighted Average Life (WAL) Calculator
- 1Enter Principal in year 1 (currency), Principal in year 2 (currency), Principal in year 3 (currency), Principal in year 4 (currency), Principal in year 5 (currency) into the Weighted Average Life Calculator.
- 2The result is computed automatically using WAL = Σ tᵢ·Pᵢ / Σ Pᵢ — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Weighted Average Life (WAL) Calculator?
- ✓Computes weighted average life calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Weighted Average Life Calculator?+
Weighted Average Life Calculator uses WAL = Σ tᵢ·Pᵢ / Σ Pᵢ. WAL weights only principal (ignoring interest), making it the standard maturity measure for amortizers, ABS and sinking-fund bonds — and the tenor used to pick the pricing benchmark. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Weighted Average Life Calculator need?+
Enter Principal in year 1 (currency), Principal in year 2 (currency), Principal in year 3 (currency), Principal in year 4 (currency), Principal in year 5 (currency) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Weighted Average Life Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Weighted Average Life Calculator?+
Faster prepayments shorten WAL; defaults with recovery lags extend it.
What is the Weighted Average Life Calculator based on?+
The method follows authoritative sources: Fabozzi — ABS cash-flow analysis. The formula and references are shown on the page so you can verify and cite the result.
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