Debt Consolidation Calculator

Enter your existing debts — credit cards, personal loans, medical bills — and a proposed consolidation loan to compare total monthly payments, payoff timelines, and total interest paid. See exactly how much you save (or don't) before committing to a consolidation loan.

Educational estimate only. Actual loan terms, approval, and APR depend on your credit score and lender. This calculator assumes fixed monthly payments on your current debts. Credit card minimum payments may decline over time, extending payoff further than shown.

Your Current Debts

Total Balance

$17,500

Total Monthly Payment

$600.00

Total Interest (current path)

$7,550

Consolidation Loan

Leave blank to use total balance ($17,500)

Typical: 1%–8%. Enter 0 if none.

Monthly payment savings: $147.36. Total interest savings: $3,673.

Monthly Savings

+$147.36

per month

Interest Savings

+$3,673

total over life of loan

New Monthly Payment

$452.64

fixed for 48 months

Payoff Timeline

48 mo

vs. 51 mo current (longest debt)

Side-by-Side Comparison

Current DebtsConsolidated Loan
Total Balance$17,500$17,850(+$350 fee)
Monthly Payment$600.00$452.64
Months to Pay Off51 mo48 mo
Total Interest Paid$7,550$3,877
Total Cost (Balance + Interest)$25,050$21,727

Individual Debt Payoff Details

DebtBalanceAPRMonthly PmtMonthsTotal Interest
Credit Card 1$8,00022.99%$250.0051$4,750
Credit Card 2$4,50019.99%$150.0042$1,800
Personal Loan$5,00012.50%$200.0030$1,000

Important Limitations

  • This calculator assumes fixed monthly payments on current debts. Credit card minimums typically decrease as balances fall, extending payoff further.
  • Actual loan approval, APR, and terms depend on your credit score, income, and lender criteria.
  • Consolidating secured debt (e.g., a car loan) into unsecured debt changes your risk profile.
  • This tool does not account for prepayment penalties on existing debts or balloon payments.
  • Not financial advice. Consult a financial advisor or credit counselor before consolidating debt.

How to Use This Debt Consolidation Calculator

Debt consolidation replaces multiple high-interest debts with a single loan at (ideally) a lower interest rate and fixed term. This calculator compares the true cost of keeping your current debts versus consolidating them.

  1. Enter Your Current Debts — Add up to five debts. For each, enter the current balance, annual interest rate (APR), and your fixed monthly payment. For credit cards, use your actual payment amount, not just the minimum (minimum-only payments significantly extend payoff time).
  2. Consolidation Loan Details — Enter the new loan's APR and term in months (e.g., 36, 48, or 60). The loan amount auto-fills from your total debt balance but can be adjusted (e.g., to include origination fees rolled into the loan).
  3. Origination Fee — Many personal loans charge a 1%–8% origination fee deducted from the loan amount or added to the balance. Including this gives a true apples-to-apples comparison.
  4. Review the Results — Compare monthly payment changes, total interest paid, and months to payoff. A lower monthly payment with a longer term may cost more in total interest even at a lower rate.

How the Calculation Works

Months to Pay Off (Current Debts)

n = −ln(1 − r×B/P) ÷ ln(1 + r)
  • B = balance
  • r = monthly rate (APR ÷ 12)
  • P = monthly payment

Consolidation Monthly Payment

PMT = L × r / (1 − (1+r)^(−n))
  • L = loan amount
  • n = term in months

When Consolidation Makes Sense

Consolidation is beneficial when (a) the new APR is significantly lower than your weighted average current APR, and (b) the term is not so long that interest accumulates and eliminates the savings. It also simplifies finances — one payment instead of many. It may not make sense if the origination fee or term extension erases the rate savings, or if you plan to pay off debts quickly regardless.

Frequently Asked Questions

Related Calculators