Debt Consolidation Calculator: Compare Payments and Cost
Compare the projected cost of existing debts with replacing them through a consolidation loan.
Inputs and calculation method
- Balances, rates, and payments on existing debts
- New consolidation rate and term
- Origination and transfer fees
- Planned extra payments
The calculator estimates the remaining payoff cost of current debts and compares it with the payment, fees, and total interest on the proposed consolidation loan.
Core formula: Estimated consolidation benefit = projected current-debt cost − projected new-loan cost, after fees.
How to interpret the estimate
A lower payment does not necessarily mean a lower total cost. Extending repayment can increase interest even when the new APR is lower.
Change one assumption at a time to understand which input has the greatest effect. Use exact figures from a lender disclosure, statement, pay record, account terms, or business records whenever possible. Calculator output is rounded and may differ from institution-specific calculations.
How to use this calculator effectively
Begin with current statements and a payment that can be repeated every month. Model no new charges unless the calculator explicitly supports future spending.
Debt consolidation should be measured by total cost and payoff discipline, not only by a lower monthly payment. Enter every balance, rate, minimum, proposed loan fee, new APR, and term. The comparison should assume the old revolving accounts are not used again; otherwise the household can end with both the consolidation loan and new card balances.
- Step 1: Balances, rates, and payments on existing debts. Use a value from a current statement, written quote, account record, or documented plan whenever possible.
- Step 2: New consolidation rate and term. Use a value from a current statement, written quote, account record, or documented plan whenever possible.
- Step 3: Origination and transfer fees. Use a value from a current statement, written quote, account record, or documented plan whenever possible.
- Step 4: Planned extra payments. Use a value from a current statement, written quote, account record, or documented plan whenever possible.
What changes the result most
- New APR relative to weighted existing rates: a genuine rate reduction can lower interest when fees do not erase the benefit.
- Origination and transfer fees: upfront costs must be added to the consolidation side of the comparison.
- New term: extending payoff can reduce monthly pressure while increasing the total amount paid.
- Behavior after consolidation: keeping old accounts at zero is essential for the modeled improvement to occur.
Practical decision guide
Compare both strategies over the same payoff date and payment amount. A lower required payment may help cash flow, but continue paying the old combined amount when affordable to capture the rate reduction. Review whether collateral is required; converting unsecured debt into debt secured by a home or vehicle changes the risk substantially.
Questions to ask before relying on the result
- Which input is documented and which one is only an assumption?
- How does the result change under a more conservative rate, cost, payment, or time horizon?
- What cash-flow, risk, tax, legal, or contractual factor is not represented by the formula?
Common mistakes to avoid
- Calling the consolidation cheaper because the monthly payment is lower.
- Leaving origination fees and financed costs out of the new balance.
- Replacing unsecured card debt with secured debt without recognizing the collateral risk.
- Clearing cards with the loan and then using them again for normal spending.
Limitations and how to verify the estimate
Approval, fees, rate offers, creditor payoff timing, and account behavior affect the result. The calculator cannot evaluate legal rights, settlement consequences, credit effects, or lender-specific terms.
Recheck the calculation when an input changes and compare the output with the applicable statement, disclosure, contract, plan document, or official source. Do not use a calculator result as a substitute for individualized financial, tax, legal, lending, investment, insurance, payroll, or accounting advice.
Save the date, inputs, and purpose of each scenario. That record makes later comparisons more reliable and helps explain why a result changed. When comparing alternatives, use the same measurement period and cost definitions; otherwise a seemingly better result may come from inconsistent assumptions rather than a genuine financial advantage.
Official references and further reading
- Consumer Financial Protection Bureau: Credit cards — Consumer information about credit-card costs, statements, payments, and account terms.
- Consumer Financial Protection Bureau: Debt collection — Official information about managing and verifying consumer debts.
Frequently asked questions
Does consolidation eliminate debt?
No. It replaces or reorganizes debt. The balance still must be repaid, and using the paid-off accounts again can increase total debt.
Should fees be included?
Yes. Origination charges and transfer fees can materially change the comparison.
Can consolidation affect credit?
Applications, new accounts, utilization changes, and account closures can affect credit profiles in different ways.
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Last technical review: June 26, 2026. Methodology is provided for transparency. This calculator is educational and does not provide financial, tax, legal, investment, lending, insurance, or accounting advice. Read the methodology and calculator disclaimer.