Compare your current multi-debt payment structure against a consolidation loan to see the real interest cost difference, monthly cash flow change, and whether the numbers support the move.
The pitch is seductive when you're juggling four due dates and four interest rates: roll it all into one loan, one payment, one rate, and breathe again. The relief is real. Whether the savings are real is a different question, and it comes down to three numbers — the new rate versus the weighted average of what you carry now, the loan term versus how fast you'd have paid it off anyway, and the origination fee the lender quietly skims off the top. This calculator takes your current debts alongside a proposed consolidation loan and shows the total cost comparison in plain dollars, not the lower-monthly-payment mirage the lender leads with.
The tool is designed to prevent the most common consolidation mistake: accepting a lower monthly payment that actually increases total interest paid because the term is extended. A longer loan at a lower rate can produce a comfortable monthly payment while costing $3,000–$6,000 more in total interest over the life of the loan. Seeing both the monthly payment and the total cost side by side is the only way to evaluate the trade-off correctly.
The three inputs that determine whether consolidation is a win
Interest Rate (APR) on the consolidation loan versus the weighted average APR of your current debts is the first comparison. If your current debts average 21% APR and you qualify for a consolidation loan at 12%, the rate differential is working in your favor. If the new loan is 17% and your current debts average 18%, the rate improvement is small and the other terms need to carry the decision.
Loan Term and origination fee are the second and third variables. A 36-month consolidation loan at 12% APR and a 2% origination fee on $15,000 costs approximately $2,600 in total interest plus $300 in fees. A 60-month loan at the same rate costs roughly $4,200 in total interest plus the same $300 fee. The monthly payment is lower on the longer term — that is the appeal — but you pay $1,600 more in total interest for the lower payment. The calculator makes this explicit.
Entering your current debts: what to include
The current debt input section captures each individual debt's balance, APR, and minimum payment. Including every debt you plan to consolidate gives the calculator the current total interest cost projection — what you will pay across all debts if you continue on the existing payment structure. That baseline is what the consolidation loan is being compared against.
Include credit cards, personal loans, and any other unsecured debt you are consolidating. Do not include a mortgage, auto loan, or student loans unless you are specifically evaluating refinancing those — they have different risk profiles and tax treatments that change the consolidation math. The comparison is most useful for revolving debt at high APRs where a fixed-rate installment loan clearly offers a rate benefit.
Origination fee: the upfront cost that most comparison calculators miss
Origination Fee % is the percentage of the loan principal charged as a fee at closing or deducted from the disbursement. Most personal consolidation loans charge 1–8% origination fees. On a $15,000 loan, a 3% origination fee is $450 upfront. That $450 needs to be recovered through interest savings before the consolidation is net positive.
At a $100/month interest savings, the $450 origination fee takes 4.5 months to recoup. On a 3-year loan, the net benefit after recouping the fee is approximately $3,150 — solidly positive. On a shorter payoff schedule or smaller interest rate differential, the break-even timeline can stretch to 12+ months, at which point the fee significantly reduces the consolidation's value. The calculator includes the fee in the total cost comparison.
Monthly payment versus total interest: the trade-off in plain numbers
Consolidation most often reduces the monthly payment while potentially increasing total interest. The reduction comes from either a lower rate, a longer term, or both. The tool separates these two effects: a consolidation that reduces total interest is a clear win regardless of the monthly payment change; one that increases total interest while reducing the monthly payment is a cash flow decision, not a savings decision.
If you need cash flow relief now and are willing to pay more in total interest over a longer period, consolidation is still a rational choice — but it should be made with full information, not based on the attractive lower monthly payment number alone. Knowing the total cost difference in dollars puts you in the right frame of mind for the decision.
When consolidation does not make sense
If you have already negotiated a low-APR balance transfer promotion with a 0% introductory rate, consolidating into a 12% personal loan before the promotional period expires is almost always a mistake. The calculator will show that clearly — your current effective rate is near 0%, and the new rate is 12%, which inverts the usual logic.
Consolidation also does not fix the behaviors that created the balances. If the underlying spending pattern continues after consolidation, you may find yourself with a new consolidation loan plus new card balances within 18 months. For long-term financial health, consolidation is one tool among several — not a fix on its own. Run your real debts and the actual lender quote through this before you sign anything; the total-cost number tells you in seconds whether the new loan is a rescue or just a more comfortable way to stay in debt longer.
How to use it
- Enter each current debt's Balance, APR percentage, and Minimum Payment in the debt input rows.
- Enter the proposed consolidation loan's Interest Rate (APR) — use a specific lender quote, not an advertised starting rate.
- Enter the Loan Term in months — 24, 36, 48, or 60 months are typical personal loan terms.
- Enter the Origination Fee % from the lender's loan disclosure document.
- Read the side-by-side comparison: current total interest cost, consolidation total cost, monthly payment change, and break-even timeline for the origination fee.
Who it's for
- Person with four credit cards at an average 22% APR — Enters $18,000 in total balances against a 12% APR consolidation offer — finds $3,800 in total interest savings over 3 years even after a 2.5% origination fee, making consolidation a clear financial win.
- Borrower evaluating a 60-month consolidation loan — Compares 36-month versus 60-month options at the same rate — finds the 60-month loan saves $240/month but costs $1,700 more in total interest, and decides the cash flow benefit is worth the interest premium given their current situation.
- Person with a mix of card and personal loan debt — Includes both a high-APR credit card and a medium-APR personal loan in the current debt inputs — finds their weighted average current rate is 19.4%, making a 13% consolidation loan a meaningful rate reduction.
- Small business owner managing personal and business card overlap — Separates personal consolidated debt from business lines, models the personal consolidation independently, and confirms it does not affect business credit utilization before proceeding.
Key terms
- Origination fee
- An upfront charge by a lender expressed as a percentage of the loan principal. Ranges from 1–8% for personal loans and represents a real cost that reduces the net benefit of consolidation.
- Weighted average APR
- The blended interest rate across all current debts, calculated by weighting each debt's APR by its share of total outstanding balance. The baseline rate the consolidation loan must beat.
- Break-even timeline
- The number of months of interest savings required to recover the origination fee paid at closing. Before this point, the consolidation has not yet been financially beneficial.
- Total interest cost
- The sum of all interest payments over the entire repayment period. The most important comparison metric between your current debt structure and a consolidation loan.
Frequently asked questions
What is a weighted average APR and why does it matter?
Weighted average APR is the average interest rate across all your current debts, weighted by balance size. If you have $5,000 at 20% and $10,000 at 15%, the weighted average is $16.7% — not the simple average of 17.5%. The consolidation loan only saves you money if its rate is below your weighted average rate, not just below your highest rate.
Does the origination fee get added to the loan balance?
Origination fees can be either deducted from the disbursement (you receive less than the loan amount) or added to the principal (your loan amount is larger than the debt being consolidated). Ask your lender which structure applies — it affects the true loan amount and total interest calculation.
Should I consolidate a car loan or student loan into a personal loan?
Usually not. Auto and student loans typically carry lower rates than personal loans, and consolidating them may increase your total interest cost. Student loans also have income-driven repayment options and potential forgiveness programs that a personal loan does not. The consolidation comparison is most useful for high-APR unsecured revolving debt.
If I pay off my credit cards with the consolidation loan, should I close them?
From a credit score perspective, keeping accounts open preserves your total available credit and reduces utilization — which benefits your score. Closing them eliminates the temptation to recharge, which benefits your financial discipline. The right answer depends on your confidence in your spending habits more than the credit score math.