Debt Consolidation Calculator

What debt consolidation really does

Debt consolidation means taking out one new loan and using it to pay off several existing debts — typically credit cards, medical bills, or smaller personal loans. Afterward you owe the same money to one lender instead of five, with one fixed payment and one due date. That’s the whole mechanism. It doesn’t forgive, settle, or reduce a single dollar of principal; every dollar you owed before, you still owe.

So where does the saving come from? Rate arbitrage. Credit cards routinely charge interest in the 20s; a borrower with decent credit can often qualify for a fixed-rate personal loan in the low-to-mid teens or better. If you move a balance from a high rate to a meaningfully lower one, less of each monthly payment is eaten by interest and more retires principal — so the same monthly budget clears the debt faster and cheaper. If the new rate isn’t meaningfully lower, or the fee eats the difference, consolidation is just reshuffling — sometimes an expensive reshuffle.

There’s also a genuine behavioral benefit that the math doesn’t capture: one payment is harder to miss than five, and a fixed installment loan has a built-in finish line that revolving credit cards never give you. Just remember that the finish line only holds if the paid-off cards stay paid off — the most common way consolidation fails is running the cards back up and ending with both the loan and fresh card debt.

Does debt consolidation actually save money?

Only when one number comes out positive. The whole verdict reduces to a single subtraction — what your current debts would cost you in interest, minus what the new loan costs in interest plus its origination fee:

Savings = current total interest − (new loan interest + origination fee)

Three conditions have to line up for that to land in the black. When all three hold, consolidation is one of the cleanest wins in personal finance; when any of them fails, the deal gets murky fast.

• The new APR is meaningfully below your weighted average APR. Not just below your worst card — below the average of everything you’re consolidating, weighted by balance. A couple of percentage points barely moves the needle after fees; look for a gap of five points or more.
• The term isn’t longer than your current payoff. If your debts would be gone in three years at your current payments, a five-year loan can cost more in total even at a lower rate, simply because interest accrues for two extra years.
• The fee is small relative to the rate savings. An origination fee is interest you pay up front. A 5% fee on a $10,000 loan is $500 gone before you save a cent.

A worked example: suppose you owe $6,500 on a credit card at 24.99% (paying $200/month) and $4,000 on an older personal loan at 12.5% (paying $150/month) — the numbers seeded in the calculator above. Your weighted average APR is about 20.2%. Left alone, those payments clear everything in 4 yr 7 mo and cost $5,171 in interest. Now roll all $10,500 into one loan at 11% APR with a 3% origination fee financed in ($315, so the loan is written for $10,815) and watch what the term does to the answer:

Every row consolidates the same debt at the same rate with the same fee. The 3-year loan barely changes your monthly payment ($354 vs $350) yet saves $2,925. The 7-year loan nearly halves the payment to $185 — and saves almost nothing ($116), because the lower rate is handed straight back as three extra years of interest. That’s the pattern to look for: rate down a lot, term the same or shorter, fee modest. On the seeded defaults the calculator’s verdict line reads $1,563 saved. Run your own numbers above; it does the comparison honestly, fee included.

The trap: lower payment, higher cost

Here’s how a consolidation loan can look great and cost you money. Lenders know that most borrowers shop on monthly payment, so the easiest way to make an offer attractive is to stretch the term. Move $10,500 of debt that would have been gone in 4 yr 7 mo into a seven-year loan and the monthly payment drops beautifully — and you pay interest for nearly two and a half additional years. As the table above shows, that stretch turns a $2,925 saving into a $116 one; push the rate or fee a little further and the “cheaper” loan costs more in total than doing nothing at all, even at a lower APR.

That’s why this calculator always shows two numbers, never one. The monthly payment tells you whether the loan fits your budget this month. The total interest and fees tell you what the loan actually costs over its life. When the tool detects the trap — a lower payment but a higher lifetime cost — it flags it explicitly, because that combination is exactly how people end up paying for the same television for a decade. A lower payment is only a win if you need the breathing room; if you can afford your current payments, a shorter term at the same rate is almost always the better deal.

One practical middle path: take the longer term for safety, but pay the loan as if it had the shorter one. Most personal loans have no prepayment penalty (confirm before signing), so extra principal payments recreate the short-term savings while keeping the lower required payment as a cushion for bad months.

Ways to consolidate

“Consolidation” is a strategy, not a product — several very different loans can do the job, with very different risk profiles:

Want to work the arithmetic yourself before trusting any calculator? Our guide how to calculate savings from debt consolidation walks through the three numbers by hand.

If your debt is mostly credit cards and you could clear it within a year or two, run the numbers on a balance transfer first — when it fits, 0% beats any loan rate. For large balances where you’re considering tapping your house, the home equity loan calculator will show the payment, but weigh the collateral risk honestly: missing payments on a credit card damages your credit; missing payments on a home equity loan can cost you your home. And don’t overlook the option that requires no new loan at all — an aggressive payoff plan using the credit card payoff calculator (snowball or avalanche) beats a mediocre consolidation offer more often than the marketing suggests, with zero fees and zero applications.

What lenders look at

The APR you’re quoted — which drives everything in this calculator — comes down to three things lenders verify before approving a consolidation loan:

• Credit score. This is the biggest driver of your rate. The strongest offers generally go to scores above roughly 720; below the mid-600s, quoted APRs climb toward card territory and the math stops working. If your score is borderline, even a few months of on-time payments and lower card utilization can change the offer materially.
• Debt-to-income ratio (DTI). Lenders compare your total monthly debt payments to your gross monthly income; most want the ratio comfortably under about 40–45%, and the best pricing goes lower. Check yours with the debt-to-income ratio calculator before applying — a high DTI is one of the most common reasons for a denial or a worse rate.
• Income proof. Expect to document income with pay stubs, W-2s, or tax returns (self-employed borrowers usually need more). Stable, verifiable income supports both approval and a better rate.

A useful habit: get pre-qualified quotes from two or three lenders — pre-qualification uses a soft credit pull that doesn’t affect your score — and plug each real offer into the calculator above. The best offer isn’t the one with the lowest payment or even the lowest APR; it’s the one with the lowest total cost on a term no longer than your current payoff.

Disclaimer: This calculator is for educational purposes only and provides estimates based on the numbers you enter. It is not financial, legal, or tax advice. Actual loan terms, rates, and payments depend on your lender and personal circumstances. All calculations run in your browser — nothing you enter is stored or sent anywhere.