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MoneyCalcKit helps you estimate loans, savings, salary, taxes, budgets, and investments using standard financial formulas. All 48 calculators run entirely in your browser — instant results, no sign-up, and your calculator inputs stay local.

Debt consolidation can simplify payments, but the total cost depends on new rate, fees, term length, and whether new debt is added afterward.

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Calculator Guide

How the Debt Consolidation Calculator works

Debt consolidation rolls several debts into one loan with a single payment, ideally at a lower blended rate. It can simplify your finances and cut interest, but only if the new rate and term genuinely beat what you're paying now.

Formula

New payment = P × r × (1 + r)ⁿ ÷ [(1 + r)ⁿ − 1], where P = sum of all balances

P is the combined balance of the debts you consolidate, r is the new loan's monthly rate, and n is its term in months. Compare the new payment and total interest against the combined totals of your existing debts.

Worked example: consolidating $20,000 of card debt at 22% into a 12% loan

  1. Cards at 22% with minimum payments could take many years and cost well over $10,000 in interest.
  2. Consolidating $20,000 into a 5-year loan at 12%: monthly rate 0.01, n = 60.
  3. New payment = 20,000 × 0.01 × 1.8167 ÷ 0.8167 ≈ $445 per month.
  4. Total paid ≈ $26,700, so interest is about $6,700 — and the debt is gone in a fixed 5 years.

How to read the result

The win comes from a lower rate and a fixed payoff date, not from a smaller payment alone. If consolidation lowers your payment only by stretching the term, you may pay more interest overall despite the lower rate.

Common mistakes to avoid

  • Consolidating, then running the cards back up — doubling the debt.
  • Choosing a long term that lowers the payment but raises total interest.
  • Ignoring balance-transfer or origination fees that eat into the savings.

Tips

Continue learning:All CalculatorsMoney GuidesCalculator MethodologyFinancial Disclaimer
Editorial note: Prepared by MoneyCalcKit editors and last reviewed June 1, 2026. Calculators use transparent formulas and browser-side inputs for educational planning estimates.

Frequently Asked Questions — Debt Consolidation Calculator

Only if the new blended rate is lower and you don't stretch the term so far that total interest rises. Compare total cost, not just the monthly payment.
There may be a short-term dip from the new application, but paying on time and lowering your utilization usually helps your score over time.
Running balances back up on the cleared cards. Consolidation only works if you stop adding new debt.
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