Debt Consolidation Calculator
Last updated July 2, 2026
Debt consolidation takes multiple debts — typically credit cards, medical bills, and personal loans — and combines them into a single loan with one payment, usually at a lower interest rate. The financial case for consolidation is straightforward when the numbers work: replacing $20,000 in credit card debt at an average 22 percent APR with a personal loan at 11 percent saves approximately $200 per month in interest and dramatically accelerates payoff. The behavioral case is more complicated — consolidation simplifies payments and removes the psychological burden of managing multiple creditors, but it also resets the balances on the original credit lines, creating a temptation to rebuild the debt that derails a significant percentage of consolidation attempts.
The break-even analysis for consolidation accounts for any origination fee on the new loan (typically 1 to 8 percent of the amount) and compares the total interest cost of both scenarios over the same time horizon. Balance transfer credit cards with 0 percent introductory periods are the most efficient consolidation option for borrowers with good credit and a clear payoff plan — the 3 to 5 percent transfer fee is often less expensive than months of interest at a personal loan rate. However, balance transfer success requires paying the full balance before the promotional period ends; the standard APR after the promotional period frequently runs higher than the rate on the original cards, creating a costly trap for borrowers who don't plan carefully.
Running the consolidation comparison against staying the course: calculate total interest paid over your planned payoff period in both scenarios, accounting for any fees. If consolidation saves $1,500 or more, has a simple break-even timeline, and you have a concrete plan to prevent rebuilding the original balances, it's a sound choice. If the savings are modest or you've consolidated before and rebuilt debt, address the spending pattern rather than the debt structure.