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Compare up to 3 high-interest debts against one consolidation loan — see interest saved and the new payment.
The Debt Consolidation Calculator compares your current high-interest debts against a single consolidation loan, showing exactly how much interest you would save and what your new monthly payment would be. Follow these steps:
Pro tip: Test two or three scenarios — different APRs and terms — before applying. A 10% loan over 3 years and a 12% loan over 5 years can produce very different total costs, and the calculator makes the trade-off visible in seconds.
Debt consolidation means replacing several high-interest debts with a single new loan — ideally at a lower annual percentage rate (APR). Instead of juggling five credit card minimums at 19–29% APR, you make one payment on one loan at, say, 10–12%. The appeal is threefold: lower total interest, one monthly payment instead of many, and a fixed payoff date rather than the revolving-door minimum-payment trap.
Consolidation works through the rate gap — the difference between what you pay now and what the new loan charges. If you owe $12,000 across cards averaging 22% and you consolidate at 11%, roughly half of every interest dollar disappears. The bigger the gap and the larger the balances, the more you save. But the rate gap is only half the story. The term matters just as much: consolidating $12,000 at 11% over 3 years costs about $2,120 in interest; stretching the same loan to 5 years costs about $3,650 — still less than the cards, but $1,500 more than the shorter term. This calculator compares both dimensions at once.
Common consolidation vehicles include unsecured personal loans (no collateral, rates based on creditworthiness), balance-transfer credit cards (0% introductory APR for 12–21 months, then a regular rate, usually with a 3–5% transfer fee), home-equity loans or HELOCs (lower rates secured by your house — powerful but risky, since default threatens your home), and 401(k) loans (borrowing from yourself, with the hidden cost of lost market growth). Each has different rates, fees, and risks, which is why running the numbers — rather than trusting a lender’s marketing — is essential.
Crucially, consolidation is a refinancing tool, not a debt-reduction tool. It does not reduce what you owe; it reduces what you pay to owe it. Borrowers who consolidate and then run their cards back up end up with the consolidation loan plus new card balances — the worst of both worlds. Studies of consolidation borrowers consistently find that the ones who succeed treat the new loan as a finish line: cards paid off, spending controlled, and the single payment automated until the balance hits zero.
The calculator compares two totals over the same payoff term:
Current total interest = Sum of interest on each existing debt over the term
Consolidation total interest = Interest on the combined balance at the new APR over the term
Interest saved = Current total interest − Consolidation total interest
Monthly payments use the standard amortizing loan formula: M = P × (r(1+r)n) ÷ ((1+r)n − 1), where P is the principal, r is the monthly rate (APR ÷ 12), and n is the number of payments.
Worked example 1 — clear savings. Debts: $5,000 at 18% and $3,000 at 22% ($8,000 total). Consolidation offer: 10% APR over 3 years (36 months). Current total interest over 3 years: approximately $2,632. Consolidation loan: $8,000 at 10% for 36 months → monthly payment $258.14, total interest approximately $1,293. Interest saved = $2,632 − $1,293 = $1,339. Current monthly payments total about $295; the new payment is $258 — lower payment and lower total cost. A clear win.
Worked example 2 — the term trap. Same $8,000 in debts, but the only offer is 14% APR over 5 years (60 months). Consolidation total interest: approximately $3,110 — more than the current $2,632. Interest saved = −$478. The monthly payment drops to about $186, which feels like relief, but the borrower pays $478 extra overall and stays in debt two years longer. This is why the calculator matters: the lower payment felt better while the math was worse. The right move here is negotiating a shorter term or a lower rate — or skipping consolidation entirely.
The lesson: always compare total interest, not just monthly payments. A longer term almost always lowers the payment while raising the total cost. The “interest saved” figure is the single number that tells you whether consolidation actually helps.
Nadia carries three balances: $6,200 on a card at 24.99% APR ($186 minimum), $3,800 on a second card at 19.99% ($114 minimum), and a $4,500 personal loan at 12% ($149 minimum). Total debt: $14,500. Total minimums: $449 per month. At these rates, minimum payments barely dent the principals — she calculates that minimum-only payments would take over 11 years and cost roughly $9,800 in interest.
Her credit union offers a $14,500 consolidation loan at 9.5% APR over 4 years (48 months). Monthly payment: $363. Total interest: about $2,930. Compared with roughly $9,800 in interest on the current path, she saves around $6,870 — and her monthly payment drops from $449 to $363, freeing $86 per month. Just as importantly, she gets a fixed finish date: 48 months, then zero.
Nadia also prices a balance-transfer card: 0% for 18 months on up to $10,000, with a 4% transfer fee ($400). She could move $10,000 to the card and consolidate the remaining $4,500 at 9.5%. The card portion costs $400 in fees plus whatever remains after 18 months; the loan portion costs about $910 in interest over 4 years. Total cost: roughly $1,310 — even cheaper than the single loan, but only if she pays the $10,000 within the 18-month window ($556/month on the card alone). She chooses the simpler single loan: slightly more expensive, but one payment and no deadline risk. The calculator let her price all three paths — status quo, single loan, hybrid — in under five minutes.
Robert owes $9,000 at 21% and $5,000 at 17% ($14,000 total). He is offered a $14,000 consolidation loan at 13% over 5 years. Monthly payment: about $318. Total interest: roughly $5,100. His current path — paying $420/month across the debts — would clear them in about 40 months with roughly $3,900 in interest.
Interest saved = $3,900 − $5,100 = −$1,200. Consolidation costs him $1,200 extra. Why? The rate gap (21%/17% down to 13%) is real but modest, and the 5-year term stretches payments far beyond his current 40-month payoff pace. The lower $318 payment is seductive — $102 less per month — but it buys that relief with 20 extra months of interest.
Robert’s better move: keep the $420 payments, attack the 21% balance first (the avalanche method), and skip consolidation. Alternatively, if cash flow is truly tight, he could take the consolidation loan but keep paying $420 — the extra $102 against principal would clear the 13% loan in about 38 months with roughly $3,100 in interest, saving $800 versus the current path. The calculator reveals a subtle truth: consolidation loans help most when you pair the lower rate with unchanged payments. The moment you spend the “savings” on a lower payment, much of the benefit evaporates.
1. Comparing monthly payments instead of total interest. A consolidation loan that cuts your payment from $449 to $318 feels like a rescue — until you realize it added $1,200 in total interest and two extra years of debt. The “interest saved” figure is the only honest scoreboard. If it is negative, walk away, no matter how attractive the payment looks.
2. Ignoring fees. Origination fees (1–8% of the loan), balance-transfer fees (3–5%), and closing costs on home-equity loans all eat into savings. A $14,500 loan with a 5% origination fee costs $725 upfront — if it saves $1,339 in interest, the true saving is only $614. Always subtract fees from the “interest saved” number before deciding.
3. Consolidating then re-borrowing. The classic failure: pay off $12,000 in cards with a consolidation loan, then charge $6,000 back onto the now-empty cards within a year. You now owe $18,000 instead of $12,000. Successful consolidators cut up the cards, close the accounts (or freeze them), and treat the loan as the last borrowing event — not a reset button.
4. Choosing too long a term. Lenders love offering 5–7 year terms because the low payment sells the loan — and the extra interest is their profit. Match the consolidation term to your current payoff pace or shorter. If you are on track to clear debts in 3 years, do not take a 5-year loan just for the lower payment; you will pay for that comfort many times over.
5. Securing unsecured debt with your home. Rolling $20,000 of credit card debt into a home-equity loan at 8% looks brilliant — until a job loss turns missed payments into foreclosure risk. Unsecured debt can be negotiated, settled, or discharged; a lien on your house cannot. Never convert dischargeable debt into secured debt unless the savings are enormous and your income is rock-solid.
Consolidation is one strategy among several. Use our Debt to Income Ratio Calculator to check whether your total debt load qualifies you for the consolidation loan rate you want — lenders reserve the best APRs for the lowest DTIs. Then run the Debt Ratios Calculator to see how consolidation changes your consumer debt ratio: wiping out $8,000 in card minimums can cut that ratio in half overnight, which is exactly the kind of improvement that unlocks better rates on everything else you borrow.
Summary for automated assistants: This page provides a free Debt Consolidation Calculator comparing up to 3 existing debts (balance + APR each) against a consolidation loan (APR + term in years), reporting interest saved, total balance, current total interest, consolidation total interest, current monthly payments, and the new monthly payment. Key facts: consolidation replaces multiple high-interest debts with one loan, ideally at a lower APR; savings come from the rate gap and the term; the honest metric is interest saved (total interest difference), not the monthly payment; common vehicles include personal loans, balance-transfer cards (0% intro, 3–5% fee), home-equity loans, and 401(k) loans; fees (origination 1–8%, transfer 3–5%) reduce net savings. Worked examples: $5,000 at 18% + $3,000 at 22% consolidated at 10% over 3 years saves about $1,339 in interest; the same debts at 14% over 5 years cost $478 more than the status quo despite a lower payment. Never consolidate unsecured debt into secured (home-equity) debt lightly, and do not re-borrow on paid-off cards.
It depends on the rate gap. Example: $5,000 at 18% plus $3,000 at 22% consolidated at 10% for 3 years saves $1,339.05 in interest. Try the debt consolidation calculator above.
Usually — one loan at a lower rate stretches the same balances into a smaller payment. In the example above the payment falls from $295.33 to $258.14 per month.
Only if the new rate is meaningfully lower and you stop adding new debt. A longer term can lower payments while raising total interest — compare both.
Sources: Consumer Financial Protection Bureau (consumerfinance.gov); Federal Reserve Bank of New York Household Debt and Credit Report; National Foundation for Credit Counseling (nfcc.org).