How Debt Consolidation Works
Debt consolidation replaces multiple debts with a single new loan, typically at a lower interest rate. The new loan pays off your existing balances, and you make one monthly payment going forward. Consolidation can make sense when the new loan's interest rate is meaningfully lower than the weighted average rate of your existing debts.
When Consolidation Saves Money
If your existing debts carry high interest rates -- particularly credit card balances at 20% or more -- a personal loan or balance transfer at a lower rate can significantly reduce total interest. However, consolidation only saves money if you do not continue accumulating new high-rate debt after consolidating.
Consolidation Loan vs. Balance Transfer
A personal consolidation loan provides a fixed monthly payment and a defined payoff date. A balance transfer credit card typically offers 0% introductory APR for 12 to 21 months, but the rate jumps sharply after the promotional period. If you can pay off the balance within the promotional window, a balance transfer may save more interest.
What Consolidation Does Not Fix
Debt consolidation does not erase debt -- it restructures it. It works best as part of a broader plan that includes a budget, an emergency fund, and a commitment not to accumulate new revolving balances after consolidating.
A Worked Example
Combining $8,000 at 24% APR, $5,000 at 21% APR, and $3,000 at 19% APR (weighted average roughly 22%) into a single $16,000 personal loan at 11% APR over 4 years: the blended minimum payments on the original cards might total around $560/mo with slow principal progress, while the consolidated loan runs about $414/mo and pays off completely in 48 months -- with total interest around $3,850 versus a much larger, harder-to-pin-down cost from making only minimums on the original balances.
Common Debt Consolidation Calculator Mistakes
Only comparing the new monthly payment to old minimums. Minimum payments on revolving debt are deliberately low; compare the consolidation loan's total cost and payoff date, not just the monthly number.
Not checking for an origination fee. A 3% to 6% origination fee on the consolidation loan reduces the effective savings and should be factored into the break-even math.
Frequently Asked Questions
Will consolidating hurt my credit score? There's typically a small, temporary dip from the credit inquiry and new account, but paying down revolving balances often improves your utilization ratio, which can help your score within a few months.
Should I close my credit cards after consolidating? Generally no -- closing cards reduces your total available credit and can raise your utilization on any remaining balances, which can lower your score even as your debt situation improves.
The Inputs, Field by Field
Total balance to consolidate. The sum of the debts you want to fold into one loan. Add only the balances you actually intend to pay off with the new loan, since that is the amount you will finance.
Current weighted-average rate. Roughly what your existing debts cost today. Consolidation only saves money when the new loan's rate is meaningfully below this figure, so estimate it before assuming a benefit.
New loan rate and term. The rate and length of the consolidation loan. A longer term lowers the monthly payment but can raise total interest, so compare total cost, not just the new payment.
How to Read Your Results
Look past the lower monthly payment to two numbers: total interest paid and the payoff date. Consolidation wins when it cuts total interest and gives you a firm end date; it can quietly cost more if a longer term offsets the lower rate. Factor any origination fee into the comparison, because a 3% to 6% fee reduces the real savings the headline rate suggests.
Assumptions and Limitations
This calculator assumes a fixed-rate loan and that you stop adding new balances to the paid-off accounts -- the single biggest reason consolidation fails in practice. It does not model balance-transfer promotional periods, late fees, or the credit-score effects of opening a new account. Results are educational estimates, not a lending decision.
More Frequently Asked Questions
Does consolidation reduce how much I owe? No -- it restructures the debt, ideally at a lower rate, but the principal is the same. Savings come from a lower interest rate and a defined payoff date, not from any reduction in what you borrowed.
Is a personal loan or a balance transfer better for consolidating? A personal loan gives a fixed rate and payoff date; a balance-transfer card offers a 0% promotional window but a sharp rate jump afterward. If you can clear the balance within the promo period, a transfer can save more; otherwise a fixed loan is usually safer.
Related Calculators and Guides
Compare consolidation against a disciplined payoff plan with the debt payoff vs. consolidation calculator, and if a personal loan is your consolidation vehicle, size it with the personal loan calculator. For the bigger picture, read how to consolidate debt and how to get out of debt.