Debt Consolidation Calculator Guide
A debt consolidation loan rolls several existing debts into one new loan, and the pitch is almost always the same: one payment instead of five, and usually a lower rate. The one-payment part is real. The lower-rate part needs checking, because the number that matters isn't the new loan's rate on its own — it's whether that rate beats the blended rate of everything you're replacing, once fees are factored in.
Your "Average Rate" Isn't What You Think
Take the debt consolidation calculator's own default case: $18,000 spread across cards and loans at a 22% average rate, currently costing $650 a month combined. That 22% figure isn't a simple average of your interest rates — it should be weighted by how much you owe on each debt. A $15,000 balance at 24% and a $3,000 balance at 10% don't average to 17%; weighted by balance, the true blended rate is closer to 21.7%, since the larger, higher-rate balance dominates the calculation. Consolidating at a flat 11% clearly beats either number here, but the gap isn't always this obvious — always weight by balance, not by how many debts sit at each rate.
Where Fees Quietly Erase the Savings
A consolidation loan advertising 11% with a $200 origination fee isn't really an 11% loan — the fee raises the effective cost of borrowing, especially on a shorter term where there's less time to spread it out. On the calculator's own example (an $18,000 balance moving from 22% to 11% over 4 years with a $200 fee), the interest savings are large enough that the fee barely registers. But on a smaller balance or a much shorter payoff term, a flat origination fee can eat a meaningful chunk of what looked like guaranteed savings on paper. Always compare "new interest plus fees" against "current interest if nothing changes" — not just the two interest rates side by side.
The Payment Question Fees Can't Hide
A consolidation loan almost always lowers your monthly payment, because it typically stretches repayment over a longer term than your highest-rate card would take to pay off on its own. That's real, immediate cash-flow relief — but a lower payment on a longer term isn't automatically a win if it means paying more in total interest over the life of the loan. Check both numbers the calculator reports: the new monthly payment, and the total interest-plus-fees compared to your current path. A loan that lowers your payment but extends your true interest cost is a legitimate tradeoff for some borrowers who need breathing room, but it's a different decision than "this saves me money," and worth making with eyes open.
What Consolidation Doesn't Fix
Rolling debt into one loan changes the math, not the spending pattern that created the balances in the first place. If the underlying habit that built up $18,000 across several cards is still active, a consolidation loan just clears space on those cards to fill up again — leaving you with the original balances back plus a new loan on top. Consolidation works best as a one-time reset paired with a real change in how new charges are handled going forward, not as a repeatable fix. If you're weighing consolidation against paying down debts individually in a specific order instead, the credit card payoff guide covers the avalanche and snowball methods for that approach, and the loan calculator guide is useful for comparing APR against fees on any new loan offer you're considering.