PayBreakdown

Debt consolidation calculator

Compare debt consolidation repayment, monthly affordability, interest, payoff time, and budget impact.

How debt consolidation is worked out

Debt consolidation replaces several balances with one loan and one monthly payment. Whether that helps turns on two separate things: the rate on the new loan compared with the rates it clears, and the term, because a longer term lowers the monthly payment while raising the total interest. A consolidation that feels cheaper every month can cost more overall. This page is planning only and does not recommend a product or a lender.

Your debts, and what each one costs

Add each balance with its rate. Nothing is stored and nothing leaves your browser.

This is not debt advice and it does not tell you which debt to repay. It reports what each balance costs in interest, using the figures you enter. Which debt to tackle, in what order, and whether repayment is the right step at all depends on things this page cannot see. Free, regulated advice is available from MoneyHelper and StepChange.

Costing most in interest right nowCar finance
Total owed
£13,900
Interest this month
£91
Paying monthly
£388

On the worked example below, Car finance costs the most at £71 this month. Add your own balances to replace it — nothing is stored and nothing leaves the page.

  • Credit cards — Including store cards and balance transfers.
  • Loans and car finance — Personal loans, car finance, hire purchase. PCP has a final balloon payment.
  • Overdrafts and revolving credit — Arranged overdrafts, buy-now-pay-later, catalogue accounts.
  • Mortgages and secured loans — The rate you are on now. Monthly interest is the annual rate divided by twelve.

Checks worth making on debt consolidation

Assumptions used here

Assumptions used here
Tax/source year2026/27
RegionEngland/Wales/Northern Ireland
Tax code basis1257L where the page uses PAYE defaults
Pension basisNo pension deduction unless this example says otherwise
Student loan basisNo student loan unless selected in this example

Source and methodology context

Source and methodology context
What is not decided herePayBreakdown does not decide payroll correctness, lender approval, benefit entitlement or employer compliance, and does not give regulated financial, mortgage, debt, tax, payroll or legal advice.

What the debt consolidation estimate assumes

The figures on this page are worked from debt consolidation, using the values below. Open the calculator if your example salary differs.

Example salary£35,000 annual gross

What would change this figure

This estimate is worked out on £35,000 annual gross. Interest rate, term, fees, deposit and the credit commitments you already have all move the result, and a lender applies its own affordability policy and credit checks on top. Treat the number as a way to see whether a repayment looks comfortable or stretched, not as an offer — and read it against your real bills, savings and any income change you expect. See how each deduction is worked out.

Official sources

Income Tax rates and Personal AllowancesNational Insurance rates and categoriesStudent loan repayment thresholdsPension tax reliefFCA guidance on misleading financial promotions

Frequently asked questions

Is the debt consolidation calculator financial advice?

No. It is an estimate worked from published HMRC and GOV.UK figures for the current tax year, using the assumptions shown on this page. It cannot see your tax code history, benefits in kind or employer payroll rules, so check important decisions against your payslip, official guidance or a qualified adviser.

Can I adjust the assumptions?

Yes. Open the linked calculator to change the salary, pension, tax code, region or student loan plan and the figures update as you type.

Last updated 2026-08-27. Checked by Sean Elsmore. Rates last checked against GOV.UK on 2026-08-07. Estimates are for planning and should be checked against official records where the decision matters.