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A debt consolidation calculator compares the total cost of keeping multiple debts separate against combining them into one loan. Instead of showing only a monthly payment, CalcForge's tool evaluates the full timeline: how long each debt takes to pay off at its current payment, how much total interest you pay, and whether a consolidation loan actually saves money or costs more when the term stretches.
Enter your existing debts and a consolidation loan offer to see whether combining them saves money or costs more in total.
Consolidation saves $5,484.89 in total
The lower rate reduces your total cost compared to keeping the debts separate. You also free up $73.32 per month in cash flow.
| Current Debts | Consolidated | Difference | |
|---|---|---|---|
| Monthly Payment | $600.00 | $526.68 | $73.32 |
| Total Interest | $10,765.33 | $5,280.44 | $5,484.89 |
| Total Cost | $30,765.33 | $25,280.44 | $5,484.89 |
| Payoff Time | 56 months | 48 months | 8 months sooner |
| Debt | Balance | APR | Payment | Months | Interest |
|---|---|---|---|---|---|
| Card A | $8,000.00 | 22.0% | $250.00 | 49 | $4,158.37 |
| Card B | $7,000.00 | 19.0% | $200.00 | 52 | $3,284.87 |
| Card C | $5,000.00 | 24.0% | $150.00 | 56 | $3,322.09 |
| Total | $20,000.00 | $600.00 | 56 | $10,765.33 |
Consolidating unsecured debt (credit cards) into a secured loan puts the collateral asset at risk. If you default, the lender can seize it.
Clearing card balances without changing spending habits can leave you with both the consolidation loan and new card balances. The consolidation loan has fixed payments; the cards do not.
CalcForge Debt Consolidation Calculator · July 2026 · https://thecalcforge.com/loans/debt-consolidation-calculator
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The savings from debt consolidation depend on three variables: the interest rate on the new loan, the term of the new loan, and how quickly your current debts would be paid off at their existing payments. A lower rate alone does not guarantee savings. If the new loan extends repayment far beyond your current payoff timeline, the extra months of interest can outweigh the rate reduction. The calculator handles this comparison by computing each debt individually at its current payment level, then measuring the consolidated loan against the sum of those individual outcomes.
The tool also accounts for origination fees. When a fee is deducted from the loan proceeds, the amount you actually receive is less than the total balance you are consolidating. The calculator computes the effective APR (the true cost of borrowing including the fee) so you can compare it against the stated rate and against the rates on your existing debts.
Consolidation replaces multiple balances with a single loan. The appeal is straightforward: if the new loan has a lower rate, each payment covers more principal and less interest. But whether this reduces your total cost depends on the term.
Worked example (computed by engine): Three cards with balances of $8,000.00 at 22.0%,$7,000.00 at 19.0%, and $5,000.00at 24.0%, with current monthly payments of $250.00, $200.00, and $150.00respectively (total $600.00/month). At those payments, the cards pay off individually in 49, 52, and 56 months, with total interest of $10,765.33 across all three. The longest payoff is 56 months.
Consolidated into a single $20,000.00 loan at 12.0% for 48 months, the payment drops to $526.68/month and total interest is $5,280.44. That saves $5,484.89 in interest over the 48-month term, because the rate reduction is large enough to overcome the term extension from 56 months (the longest individual payoff) to 48 months.
A lower monthly payment is not the same as a lower total cost. Consolidation is sold on the payment reduction, but the relevant question is what you pay in total over the full repayment period. Two examples with the same $20,000.00 balance illustrate the difference.
Case 1: Consolidation saves (shorter term). The three cards from the previous section ($20,000.00total) are consolidated at 12.0% for 36 months. The payment is $664.29/month and total interest is $3,914.28. Compared to $10,765.33 in interest on the current debts, consolidation saves $6,851.05.
Case 2: Consolidation costs more (longer term). A borrower has three debts totaling $10,000.00: $5,000.00 at 18.0% paying $500.00/month, $3,000.00 at 15.0% paying $300.00/month, and $2,000.00 at 20.0% paying $200.00/month. These aggressive payments retire the debts in approximately 12 months each, with total interest of $889.29.
Consolidated into a $10,000.00 loan at 12.0%for 48 months, the payment is $263.34/month and total interest is $2,640.22. The total cost rises from $10,889.29 to $12,640.22, an increase of $1,750.93. The rate dropped, but the term stretched from 12 months to 48 months. The borrower pays $1,750.93 more in exchange for a lower monthly payment.
The key distinction
A lower monthly payment improves cash flow. A lower total cost saves money. These are different outcomes. The calculator reports both so you can decide which matters more for your situation.
Credit score affects the rate a lender offers on a consolidation loan. The table below shows how different rates change the cost of a $20,000.00 consolidation loan over 48 months. These rates are illustrative inputs, not quotes from any lender or credit-scoring model.
| Input APR | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|
| 8.0% | $488.26 | $3,436.39 | $23,436.39 |
| 12.0% | $526.68 | $5,280.44 | $25,280.44 |
| 18.0% | $587.50 | $8,200.00 | $28,200.00 |
At 8.0%, total interest is $3,436.39. At 18.0%, it rises to $8,200.00, a difference of $4,763.61. The rate you qualify for determines whether consolidation saves money compared to your current debts. Enter your actual offer in the calculator above to get a precise comparison.
Using the same three cards from the earlier example ($8,000.00at 22.0%, $7,000.00 at 19.0%,$5,000.00 at 24.0%, total $600.00/month), the total balance is $20,000.00. At the current payments, total interest across all cards is $10,765.33 and the longest individual payoff is 56 months.
Consolidated at 12.0% over 60 months, the monthly payment is $444.89, which is $155.11 less per month than the current $600.00. Total interest on the consolidation loan is $6,693.31.
Comparing total interest: the current debts cost $10,765.33 in interest. The 60-month consolidation loan costs $6,693.31 in interest. The difference is $4,072.02. Consolidation saves that amount in interest. The monthly payment drops by $155.11, freeing up cash flow each month. The payoff timeline extends by 4 months.
Whether this trade-off works for you depends on whether you need the lower payment for monthly cash flow or whether minimizing total cost is the priority. The calculator lets you adjust the term and rate to find the crossover point where consolidation switches from saving money to costing more.
If you are evaluating a personal loan for consolidation, use our Personal Loan Calculator to see the amortization schedule and effective APR with an origination fee. Compare against vehicle financing with our Auto Loan Calculator, or browse all tools on the Loan Calculators hub.