Clean vs Dirty Price Calculator
Convert between the quoted clean price and the invoice (dirty) price by adding or stripping accrued interest.
Formula
Bonds are quoted clean so prices don't saw-tooth at each coupon, but you settle dirty. The accrued portion belongs economically to the seller. The dirty price drops by exactly one coupon on the ex-date.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need clean vs dirty price calculator results fast? Analysts, founders, traders and finance professionals use the Clean vs Dirty Price Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Clean vs Dirty Price Calculator
Convert between the quoted clean price and the invoice (dirty) price by adding or stripping accrued interest. Bonds are quoted clean so prices don't saw-tooth at each coupon, but you settle dirty. The accrued portion belongs economically to the seller. The dirty price drops by exactly one coupon on the ex-date. The governing relationship is Dirty = Clean + AI; AI = c × days/basis (per 100). The Clean vs Dirty Price 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 Clean vs Dirty Price Calculator
- 1Enter Clean price (per 100), Coupon rate (% p.a.), Days since last coupon, Day-count basis, Trade face value (currency) into the Clean vs Dirty Price Calculator.
- 2The result is computed automatically using Dirty = Clean + AI; AI = c × days/basis (per 100) — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Clean vs Dirty Price Calculator?
- ✓Computes clean vs dirty price 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 Clean vs Dirty Price Calculator?+
Clean vs Dirty Price Calculator uses Dirty = Clean + AI; AI = c × days/basis (per 100). Bonds are quoted clean so prices don't saw-tooth at each coupon, but you settle dirty. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Clean vs Dirty Price Calculator need?+
Enter Clean price (per 100), Coupon rate (% p.a.), Days since last coupon, Day-count basis, Trade face value (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 Clean vs Dirty Price 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 Clean vs Dirty Price Calculator?+
The accrued portion belongs economically to the seller. The dirty price drops by exactly one coupon on the ex-date.
What is the Clean vs Dirty Price Calculator based on?+
The method follows authoritative sources: Choudhry, The Bond & Money Markets, ch. 1. The formula and references are shown on the page so you can verify and cite the result.
Related Finance tools
Human Life Value (HLV) Calculator
The economic value of your future earnings to your family — the income-replacement basis for sizing a life-insurance cover.
● LiveTerm Life Insurance Coverage Calculator
How much term-life cover you actually need — replacing income, clearing debts and funding goals, net of existing assets and cover.
● LiveDIME Method Life Insurance Calculator
The DIME formula — Debt + Income + Mortgage + Education — a fast, complete way to size a life-insurance cover.
● Live