The true cost of a personal loan, with examples

The one calculation that matters

Take the monthly payment, multiply by the number of months, and subtract what actually landed in your bank account. That is what the loan costs you.

The second half of that sentence is the part people skip. If the loan carries an origination fee, the money that reaches you is smaller than the loan you are repaying, so the fee belongs in the cost. Borrow $20,000 with a 5% fee, receive $19,000, and repay against the full $20,000.

If the loan is for paying off cards, our calculator with origination fee does this math with your own balances and shows the break-even rate.

Three inputs drive that number: the amount, the rate, and the term. Most people negotiate the first, shop the second, and never think about the third. As you are about to see, the third is often the one doing the most damage.

What the term does to the price

Same $20,000, same 13% rate, and the only thing that changes is how long you take to repay it.

Moving from three years to seven drops the payment by $310 a month, which is real money in a real budget. It also costs an extra $6,303. Nothing about the loan improved. The rate is identical. You simply agreed to rent the money for four more years.

This is why "what can you afford per month" is the wrong opening question, even though it is the one every application asks. The right question is the shortest term whose payment you can carry without strain, because every month you shave off is money you keep.

What the rate does

Rate matters too, and here is its size next to the term. Same $20,000, same four-year term, and only the rate moves.

Going from 20% to 8% on the same loan saves $5,777, which is why working the levers on your rate before you apply is worth real effort. But notice something: the swing across those four rates is roughly the same size as the swing across the terms above. Rate and term matter about equally, and only one of them gets shopped.

Two offers, and the cheaper one loses

Here is the situation that makes this whole article worth reading. You need $20,000 and two lenders come back.

Offer A has the better rate and a payment $253 a month lower. It also costs $2,305 more, and it deposits $1,000 less into your account. Every visible signal points at A, and B is the cheaper loan.

Two things are hiding in plain sight there. The fee makes A's true APR 13.25% rather than the advertised 10.99%, which is exactly what APR is designed to reveal. And the two extra years of term do more damage than the rate difference repairs. Neither is visible if you compare the two headline rates, which is what most people do.

Lowering the real number

• Take the shortest term you can genuinely carry. The single biggest lever, and the one that costs nothing to pull. Be honest about "genuinely," because a payment you cannot sustain leads to a late fee and credit damage that dwarfs the savings.
• Compare on APR, not the interest rate. APR includes the origination fee. The rate does not. Offer A above is the entire argument.
• Borrow only what you need. Every extra thousand is priced at the same rate for the same term. If a lender approves you for more, that is an offer to sell you more of the product, not a compliment.
• Take the autopay discount. Many lenders cut a quarter to half a point for automatic payments, which is free if you were going to autopay anyway.
• Prequalify with several lenders. Prequalification usually uses a soft pull, which does not change your score, and the spread between the best and worst offer on the same borrower is routinely wide enough to matter more than any other step here.
• Pay extra when you can. On that $20,000 at 13% over five years, an extra $100 a month finishes the loan in about 46 months instead of 60 and saves roughly $1,811. Check for a prepayment penalty first, because a small number of lenders still write them.

When the cost is worth paying

None of this is an argument against borrowing. A loan that costs $4,260 to replace credit card debt costing $18,000 is a good trade, and running the total is what proves it rather than what prevents it.

The cost is worth paying when the alternative is more expensive, which is the whole logic of consolidating card debt. It is worth paying when the expense is genuinely necessary and the payment fits without strain. And it is worth paying when a fixed end date replaces an open-ended obligation, because that structural change has value beyond the arithmetic.

What I would not do is choose a loan without knowing its price. That is the situation the industry is built to produce, and it takes about thirty seconds of multiplication to escape it.

When you are ready to price a real loan, start on the Lendifi personal loans page and run the same total cost math on every offer you see.

Lendifi is operated by Apex Lead Group LLC. Lendifi is not a lender and does not make loans or credit decisions. We are an advertising-supported comparison service, and some links on this page are affiliate links through which we may earn a commission at no cost to you. Any rates, payments, or savings figures shown are estimates based on average market data and are not guarantees of approval or financing. Actual rates and terms are determined by the lender based on your full credit profile. See our Ad Disclosure for details.