Interest saved
The whole point. It is the gap between what your current rate will cost you and what the new rate costs. If this number is small or negative, consolidating is not worth it.
Free tool — no signup, no credit check
Debt Consolidation Calculator
See what you'd actually save by replacing your current debts with one loan. It compares your real payoff path against a consolidation loan and shows the interest and months you'd cut — all in your browser, with nothing submitted.
The math
How this calculator works
It runs two scenarios side by side and subtracts one from the other. There is no black box here — it is the same arithmetic your lender uses.
1. Your current path (simulated month by month)
Revolving debt has no fixed end date, so it cannot be solved with a single formula. The calculator walks forward one month at a time: it charges interest on your balance, subtracts your payment, and repeats until the balance hits zero.
That loop is what produces your real payoff time and total interest — and it is why a small payment on a high rate can stretch for years.
2. The consolidation loan (amortized)
A consolidation loan has a fixed rate and term, so it uses the standard amortization formula: M = P × r ÷ (1 − (1 + r)−n). Fixed payment, known end date, no guesswork.
3. The difference is your saving
Subtract the consolidated interest from your current-path interest and you have the number in green. The months saved come from comparing the two payoff timelines.
Watch for the "never" case. If your monthly payment is smaller than the interest charged that month, the balance grows and the debt never clears. The calculator will tell you when that happens — it is the clearest possible signal that you need a different plan.
A real example
$15,000 of card debt, worked through
The default numbers above, shown in full. This is where the saving actually comes from.
| Stay on the cards | Consolidate | |
|---|---|---|
| Balance | $15,000 | $15,000 |
| Rate | 24% APR | 12% APR |
| Monthly payment | $450 | $498 |
| Payoff time | 56 months | 36 months |
| Interest paid | $9,966 | $2,936 |
| Total repaid | $24,966 | $17,936 |
The consolidated payment is $48 a month higher — and that is exactly why it wins. The extra $48 goes to principal instead of interest, clearing the debt 20 months sooner and saving $7,031. Paying less each month is what keeps people in debt for five years.
Want the strategy behind the numbers? Read is debt consolidation a good idea for when this works and when it backfires.
Reading your result
What each number means
Months saved
How much sooner you are debt-free. A fixed term forces an end date — revolving balances have none, which is how years disappear.
New monthly payment
Often slightly higher than what you pay now. That is fine — and usually good. Check it fits your budget before you commit.
Estimates, not an offer. Great Plains Lending is a loan-matching service, not a lender or a debt-relief company. This tool calculates interest only, assumes a fixed rate and equal payments, and excludes origination fees, which some lenders deduct from your funds. Your real rate and terms come from the lender and are shown in full before you sign.
Answers
Debt consolidation calculator FAQ
How does a debt consolidation calculator work?
It runs two scenarios. Your current path is simulated month by month — interest is charged, your payment is subtracted, repeat until the balance clears — which gives real payoff time and interest. The consolidation loan is amortized with a fixed rate and term. The difference between the two totals is your saving.
How much can debt consolidation actually save?
It depends entirely on the rate gap. Using the default example: $15,000 at 24% paying $450/month takes 56 months and $9,966 in interest. The same $15,000 consolidated at 12% over 36 months costs $2,936 — saving about $7,031 and finishing 20 months sooner.
Does consolidating debt hurt your credit score?
Usually it helps over time. Applying may add a hard inquiry that dips your score a few points briefly, but paying cards to zero lowers your credit utilization — a major scoring factor — and on-time installment payments build history. Keep the paid-off cards open and unused.
When is consolidation not worth it?
When the new APR is not meaningfully below your current average, when a large origination fee erases the saving, or when you keep charging the cards afterward. That last one leaves you with the loan payment plus new card balances — worse than where you started.
Should I pick the lowest monthly payment?
No. Stretching the term lowers the payment but raises total interest. Choose the shortest term whose payment you can comfortably afford, and watch the interest figure rather than the monthly number.
Does this calculator include fees?
No — interest only. Some lenders charge an origination fee of 1–8% deducted from your funds, so subtract that from any saving shown here before deciding.
Is this the same as debt settlement?
No. Consolidation repays 100% of what you owe at a lower rate and generally protects your credit. Settlement negotiates to pay less than the full balance but usually damages credit for years. This calculator models consolidation only.
See the rate this is actually based on.
The saving depends on your real APR. Check what you qualify for in about 5 minutes — soft check, no impact to your credit.
Free matching service · You choose whether to accept any offer
Keep reading
Related guides
- Debt consolidation — how it works and how to qualify with bad credit.
- How to consolidate credit card debt — loans, balance transfers and DMPs compared.
- Best debt consolidation loans — how to find the cheapest one you qualify for.
- Consolidation vs. debt settlement — which fits your situation.