How debt consolidation actually works
You roll several debts into one, ideally at a lower rate.
- You take out one new debt — a loan or a card — and use it to pay off several old balances.
- Now you owe one lender, with one payment and, for a loan, a fixed payoff date.
- It saves money only if the new rate, plus any fee, beats your current blended rate.
- The catch: it moves the debt, it doesn't erase it. Run the old cards back up and you owe both.
What consolidation actually does
Say you carry four card balances at rates of 22% to 29%. Consolidation combines them into one new debt. You take out that new debt, use it to pay each card to zero, and from then on you pay one lender instead of four.
Now you owe a single balance. If the new rate is lower, less of each payment goes to interest and more goes to the balance. With a loan, you also get a fixed payoff date — the debt has an end.
Here is the part the pitch skips. It works only if the new rate, plus any fee, is lower than the blended rate you pay now. Add up what your current debts charge together. If the new deal beats that number, you save. If it doesn't, you've moved the debt for nothing.
And consolidation moves debt; it does not erase it. Paying off the cards leaves them open with a $0 balance. Run them back up and you owe the new loan and the new card balances. That is how people end up deeper than they started.
The two tools people use
Almost every consolidation runs through one of two products. They work differently, so the math is different.
A personal or consolidation loan. A lender gives you a lump sum at a fixed rate for a fixed term. You use it to clear the cards, then repay the loan in equal monthly payments — often over 2 to 5 years. The rate and the payoff date don't move, so the total cost is known up front.
A balance-transfer card. You move your card balances onto one new card that charges a low or 0% rate for a set number of months. That promo window is the whole appeal: pay the balance down before it ends and you owe little interest. When the window closes, the rate jumps to the card's standard rate on whatever is left.
The transfer isn't without cost. Most cards charge a balance-transfer fee, often 3% to 5% of the amount you move. Moving $8,000 at a 4% fee costs $320 the day the transfer clears. Count that fee before you decide the card wins.
The steps
- List every debt and its rate. Write down each balance and what it charges. Add them up to find your blended rate — the number the new deal has to beat.
- Pick the tool. A fixed-rate loan for a known payoff, or a balance-transfer card if you can clear the balance inside the promo window.
- Check the true cost. Compare the new rate, plus any origination or transfer fee, against your current blended rate. If it isn't lower, stop here.
- Move the balances. Use the new loan or card to pay each old debt to zero.
- Leave the old cards alone. The accounts stay open. Don't run them back up, or you undo the whole thing.
Want the two tools side by side? See balance-transfer card vs. loan. To price it out, read what consolidation really costs.
Consolidation lowers the rate. It does not lower the discipline the debt required in the first place.
The old cards come out of it open and empty. If they get run back up, you carry the new loan and fresh card balances at the same time — and the total debt grows. The tool only works if the spending that built the debt has stopped.