★ MONEY · COMPARISON #273 · LOAN VS CARD
On the defaults — the same $10,000 on both sides, the same $322.67 a month on both sides — the personal loan costs $1,616.12 in interest over 36 months and the credit card costs $5,759.16 over 49 months: the personal loan wins by $4,143.04 in interest and 13 months. Put in your own debt, rates, and payment, and the calculator works out the cost on each side, the winner, and the gap — and works backwards when you have a target instead. Comparison #273 in the Bright Side Kit comparisons library. The existing balance transfer vs loan calculator compares a balance transfer against a loan; the existing debt payoff vs investing page compares paying debt against investing — this page compares two ways to BORROW the same $10,000, at the SAME monthly payment, so the only difference is the rate.
The same debt on both sides, the same monthly payment on both sides — the only difference is the rate. Put in a debt, a loan APR and term, a card APR, and a monthly payment, and the calculator works out the interest and the payoff time on each side, the winner, and the gap — and works backwards when you have a target instead.
On the defaults — the same $10,000 on both sides, the same $322.67 a month on both sides — the personal loan costs $1,616.12 in interest over 36 months and the credit card costs $5,759.16 over 49 months, so the personal loan wins by $4,143.04 in interest and 13 months. The whole comparison is three moves: price the loan, price the card at the same payment, and subtract the two interests.
Five things about the model are worth stating plainly. First, the loan payment is $10,000.00 × i ÷ (1 − (1 + i)^−36) with i = 10% ÷ 12 — $322.67 a month, and the loan total is the rounded payment × months: $322.67 × 36 = $11,616.12, so the loan interest is $11,616.12 − $10,000.00 = $1,616.12. Second, the card charges interest monthly on the balance at 24% ÷ 12 = 2% a month, the $322.67 payment is applied after interest, and the monthly interest is rounded to cents each month — 48 full payments plus a final $271.00 payment clear the card in 49 months. Third, the card total is $15,759.16 and the card interest is $15,759.16 − $10,000.00 = $5,759.16. Fourth, the winner is the lower total interest, from the ROUNDED interests — $5,759.16 − $1,616.12 = $4,143.04 — and a rounded gap of $0.00 is a tie. And fifth, this ignores loan origination fees, card annual fees, and late fees; a real card’s minimum payment is usually 1–2% of the balance and stretches the payoff far longer; rates are illustrative, not offers; a loan’s fixed term is a commitment a card does not impose; all listed in Accuracy & limitations.
Setup: $10,000.00 debt, loan 10% over 36 months, card 24%, card pays the loan payment of $322.67 a month.
Line 1 — price the loan. The loan payment is $322.67 a month, the total paid is $322.67 × 36 = $11,616.12, and the interest is $1,616.12.
Line 2 — price the card at the same payment. The card charges 2% a month on the balance; at $322.67 a month it takes 49 months (48 full payments + a final $271.00 payment), the total paid is $15,759.16, and the interest is $5,759.16.
Line 3 — subtract the interests. The gap is $5,759.16 − $1,616.12 = $4,143.04, and the winner is the personal loan, by $4,143.04 in interest and 13 months.
card APR 18%: Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 18.00% at $322.67/mo: 42 months (41 full payments + a final $321.06 payment), total paid $13,550.53, interest $3,550.53; the personal loan wins by $1,934.41 in interest and 6 months — An 18% card instead of 24% still loses — the loan wins by $1,934.41 and 6 months.
loan APR 8%: Debt $10,000.00, loan 8.00% / 36 months: payment $313.36/mo, total paid $11,280.96, interest $1,280.96; card 24.00% at $313.36/mo: 52 months (51 full payments + a final $109.08 payment), total paid $16,090.44, interest $6,090.44; the personal loan wins by $4,809.48 in interest and 16 months — An 8% loan instead of 10% widens the win to $4,809.48 and 16 months.
loan term 60 months: Debt $10,000.00, loan 10.00% / 60 months: payment $212.47/mo, total paid $12,748.20, interest $2,748.20; card 24.00% at $212.47/mo: 144 months (143 full payments + a final $40.19 payment), total paid $30,423.40, interest $20,423.40; the personal loan wins by $17,675.20 in interest and 84 months — The small payment is the trap — a 60-month loan leaves the card crawling for 12 years: 144 months and $20,423.40 of interest.
card payment $500/mo: Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 24.00% at $500.00/mo: 26 months (25 full payments + a final $398.75 payment), total paid $12,898.75, interest $2,898.75; the personal loan wins by $1,282.63 in interest but the card finishes 10 months sooner — The trade-off is speed vs cost: the loan still wins on interest by $1,282.63, BUT the card finishes 10 months sooner at $500 a month.
debt $25,000: Debt $25,000.00, loan 10.00% / 36 months: payment $806.68/mo, total paid $29,040.48, interest $4,040.48; card 24.00% at $806.68/mo: 49 months (48 full payments + a final $677.19 payment), total paid $39,397.83, interest $14,397.83; the personal loan wins by $10,357.35 in interest and 13 months — Five times the debt, the same shape: the loan wins by $10,357.35 and 13 months.
card APR 29.99%: Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 29.99% at $322.67/mo: 61 months (60 full payments + a final $111.77 payment), total paid $19,471.97, interest $9,471.97; the personal loan wins by $7,855.85 in interest and 25 months — A 29.99% card instead of 24% widens the win to $7,855.85 and 25 months.
loan APR 12%: Debt $10,000.00, loan 12.00% / 36 months: payment $332.14/mo, total paid $11,957.04, interest $1,957.04; card 24.00% at $332.14/mo: 47 months (46 full payments + a final $181.51 payment), total paid $15,459.95, interest $5,459.95; the personal loan wins by $3,502.91 in interest and 11 months — A 12% loan instead of 10% narrows the win to $3,502.91 and 11 months.
Card APR for an exact tie with the loan interest: 10.00% — the exact card APR is 9.9996%. At the displayed 10.00% the card takes 37 months and costs $1,616.20 in interest, so the loan wins by $0.08 — effectively a tie; the card’s monthly interest rounding pushes one extra month. At 9.99% the card takes 36 months and costs $1,614.24, so the card wins by $1.88; at 10.01% the card takes 37 months and costs $1,618.17, so the loan wins by $2.05. This is the FLIP POINT, not a clean tie at the displayed value: below it the card wins, above it the loan wins. The star is a PERCENT.
Card monthly payment for a 36-month payoff: $393 — the smallest whole-dollar payment that clears the card in 36 months; the exact formula payment is 392.3285. At $393 the card takes 36 months and costs $4,113.08 in interest. At the displayed $392.33 the card takes 36 months and costs $4,123.78 in interest, for a total of $14,123.78. $392 takes 37 months and costs $4,129.41. This is a step reverse: payments come in whole dollars here, so there is no exact in-between. The star is DOLLARS.
Loan APR for $2,000.00 loan interest: 12.25% — the exact loan APR is 12.2493%. At the displayed 12.25% the loan payment is $333.34 and the interest is $2,000.24, $0.24 over the $2,000.00 target — rounding. 12.24% gives $1,998.44; 12.26% gives $2,002.04. The star is a PERCENT.
Debt for $5,000.00 card interest: $8,681.68 — the exact debt is 8681.6800. At the displayed $8,681.68 the loan payment is $280.13 and the card takes 49 months and costs $5,000.04 in interest, $0.04 over the $5,000.00 target — rounding. $8,680.68 gives $4,999.28; $8,682.68 gives $5,000.32. The star is DOLLARS.
Card APR for $3,000.00 card interest: 16.05% — the exact card APR is 16.0469%. At the displayed 16.05% the card takes 41 months and costs $3,000.83 in interest, $0.83 over the $3,000.00 target — rounding. 16.04% gives $2,998.12; 16.06% gives $3,003.48. The star is a PERCENT.
Loan term for loan interest of $1,000.00 or less: 22 months — the LONGEST term that keeps interest at or under $1,000: 22 months means a $499.37 payment and $986.14 of interest; 23 months means $1,030.34 of interest — one month longer breaks the $1,000 ceiling. Shorter terms cost less interest; the STEP holds for terms of 22 months or fewer. The star is MONTHS.
The defaults are a $10,000.00 debt, a 10.00% loan over 36 months, a 24.00% card, and a $322.67 monthly payment — loan interest $1,616.12, card interest $5,759.16. With a debt of $0, Debt $0.00, loan 10.00% / 36 months: payment $0.00/mo, total paid $0.00, interest $0.00; card 24.00% at $0.00/mo: —, total paid $0.00, interest $0.00; Tie — no debt, no interest, no payments (months shown as “—”, not a negative number). With a card APR of 0%, Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 0.00% at $322.67/mo: 31 months (30 full payments + a final $319.90 payment), total paid $10,000.00, interest $0.00; the credit card wins by $1,616.12 in interest and finishes 5 months sooner — the flip: a 0% card beats any loan that charges interest. With a loan APR of 0%, Debt $10,000.00, loan 0.00% / 36 months: payment $277.78/mo, total paid $10,000.08, interest $0.08; card 24.00% at $277.78/mo: 65 months (64 full payments + a final $78.80 payment), total paid $17,856.72, interest $7,856.72; the personal loan wins by $7,856.64 in interest and 29 months — 36 payments of $277.78 overshoot the $10,000.00 debt by 8 cents. With a card payment of $100 a month at 24%, the card NEVER pays off — the first-month interest on $10,000 is $200.00, more than the $100.00 payment, so the balance GROWS every month. With a debt of $100,000, Debt $100,000.00, loan 10.00% / 36 months: payment $3,226.72/mo, total paid $116,161.92, interest $16,161.92; card 24.00% at $3,226.72/mo: 49 months (48 full payments + a final $2,708.64 payment), total paid $157,591.20, interest $57,591.20; the personal loan wins by $41,429.28 in interest and 13 months. With a card APR of 36%, Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 36.00% at $322.67/mo: 90 months (89 full payments + a final $271.90 payment), total paid $28,989.53, interest $18,989.53; the personal loan wins by $17,373.41 in interest and 54 months.
| Output | Formula | What it means |
|---|---|---|
| Debt | input | $10,000.00. |
| Loan APR | input | 10.00%. |
| Loan term | input | 36 months. |
| Loan payment | P × i ÷ (1 − (1 + i)^−n) | $322.67/mo. |
| Loan total paid | rounded payment × months | $11,616.12. |
| Loan interest | total paid − debt | $1,616.12. |
| Card APR | input | 24.00%. |
| Card monthly payment | input | $322.67/mo. |
| Card months to pay off | interest rounded to cents each month | 49 months (48 full payments + a final $271.00 payment). |
| Card final payment | remaining balance + interest | $271.00. |
| Card total paid | sum of the monthly payments | $15,759.16. |
| Card interest | total paid − debt | $5,759.16. |
| Winner | the lower total interest; a $0.00 gap is a tie | the personal loan wins by $4,143.04 in interest and 13 months. |
| Interest gap | |card interest − loan interest| on the displayed interests | $4,143.04. |
| Card APR for an exact tie with the loan interest | exact 9.9996 | 10.00% → 10.00%. |
| 0.01pp below the R1 star | 9.99% | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 9.99% at $322.67/mo: 36 months (35 full payments + a final $320.79 payment), total paid $11,614.24, interest $1,614.24; the credit card wins by $1.88 in interest in the same months. |
| 0.01pp above the R1 star | 10.01% | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 10.01% at $322.67/mo: 37 months (36 full payments + a final $2.05 payment), total paid $11,618.17, interest $1,618.17; the personal loan wins by $2.05 in interest and 1 month. |
| Card monthly payment for a 36-month payoff | exact 392.3285 | $393 → $393.00. |
| $1 less than the R2 star | $392 | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 24.00% at $392.00/mo: 37 months (36 full payments + a final $17.41 payment), total paid $14,129.41, interest $4,129.41; the personal loan wins by $2,513.29 in interest and 1 month. |
| $1 more than the R2 star | $394 | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 24.00% at $394.00/mo: 36 months (35 full payments + a final $307.11 payment), total paid $14,097.11, interest $4,097.11; the personal loan wins by $2,480.99 in interest in the same months. |
| Loan APR for $2,000.00 loan interest | exact 12.2493 | 12.25% → 12.25%. |
| 0.01pp below the R3 star | 12.24% | Debt $10,000.00, loan 12.24% / 36 months: payment $333.29/mo, total paid $11,998.44, interest $1,998.44; card 24.00% at $333.29/mo: 47 months (46 full payments + a final $94.36 payment), total paid $15,425.70, interest $5,425.70; the personal loan wins by $3,427.26 in interest and 11 months. |
| 0.01pp above the R3 star | 12.26% | Debt $10,000.00, loan 12.26% / 36 months: payment $333.39/mo, total paid $12,002.04, interest $2,002.04; card 24.00% at $333.39/mo: 47 months (46 full payments + a final $86.80 payment), total paid $15,422.74, interest $5,422.74; the personal loan wins by $3,420.70 in interest and 11 months. |
| Debt for $5,000.00 card interest | exact 8681.6800 | $8,681.68 → $8,681.68. |
| $1 less than the R4 star | $8,680.68 | Debt $8,680.68, loan 10.00% / 36 months: payment $280.10/mo, total paid $10,083.60, interest $1,402.92; card 24.00% at $280.10/mo: 49 months (48 full payments + a final $235.16 payment), total paid $13,679.96, interest $4,999.28; the personal loan wins by $3,596.36 in interest and 13 months. |
| $1 more than the R4 star | $8,682.68 | Debt $8,682.68, loan 10.00% / 36 months: payment $280.17/mo, total paid $10,086.12, interest $1,403.44; card 24.00% at $280.17/mo: 49 months (48 full payments + a final $234.84 payment), total paid $13,683.00, interest $5,000.32; the personal loan wins by $3,596.88 in interest and 13 months. |
| Card APR for $3,000.00 card interest | exact 16.0469 | 16.05% → 16.05%. |
| 0.01pp below the R5 star | 16.04% | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 16.04% at $322.67/mo: 41 months (40 full payments + a final $91.32 payment), total paid $12,998.12, interest $2,998.12; the personal loan wins by $1,382.00 in interest and 5 months. |
| 0.01pp above the R5 star | 16.06% | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 16.06% at $322.67/mo: 41 months (40 full payments + a final $96.68 payment), total paid $13,003.48, interest $3,003.48; the personal loan wins by $1,387.36 in interest and 5 months. |
| Loan term for loan interest of $1,000.00 or less | exact 22 | 22 months → 22 months. |
| 1 month shorter than the R6 star | 21 months | Debt $10,000.00, loan 10.00% / 21 months: payment $521.05/mo, total paid $10,942.05, interest $942.05; card 24.00% at $521.05/mo: 25 months (24 full payments + a final $237.75 payment), total paid $12,742.95, interest $2,742.95; the personal loan wins by $1,800.90 in interest and 4 months. |
| 1 month longer than the R6 star | 23 months | Debt $10,000.00, loan 10.00% / 23 months: payment $479.58/mo, total paid $11,030.34, interest $1,030.34; card 24.00% at $479.58/mo: 28 months (27 full payments + a final $120.83 payment), total paid $13,069.49, interest $3,069.49; the personal loan wins by $2,039.15 in interest and 5 months. |
| card APR 18% | same model | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 18.00% at $322.67/mo: 42 months (41 full payments + a final $321.06 payment), total paid $13,550.53, interest $3,550.53; the personal loan wins by $1,934.41 in interest and 6 months. |
| loan APR 8% | same model | Debt $10,000.00, loan 8.00% / 36 months: payment $313.36/mo, total paid $11,280.96, interest $1,280.96; card 24.00% at $313.36/mo: 52 months (51 full payments + a final $109.08 payment), total paid $16,090.44, interest $6,090.44; the personal loan wins by $4,809.48 in interest and 16 months. |
| loan term 60 months | same model | Debt $10,000.00, loan 10.00% / 60 months: payment $212.47/mo, total paid $12,748.20, interest $2,748.20; card 24.00% at $212.47/mo: 144 months (143 full payments + a final $40.19 payment), total paid $30,423.40, interest $20,423.40; the personal loan wins by $17,675.20 in interest and 84 months. |
| card payment $500/mo | same model | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 24.00% at $500.00/mo: 26 months (25 full payments + a final $398.75 payment), total paid $12,898.75, interest $2,898.75; the personal loan wins by $1,282.63 in interest but the card finishes 10 months sooner. |
| debt $25,000 | same model | Debt $25,000.00, loan 10.00% / 36 months: payment $806.68/mo, total paid $29,040.48, interest $4,040.48; card 24.00% at $806.68/mo: 49 months (48 full payments + a final $677.19 payment), total paid $39,397.83, interest $14,397.83; the personal loan wins by $10,357.35 in interest and 13 months. |
| card APR 29.99% | same model | Debt $10,000.00, loan 10.00% / 36 months: payment $322.67/mo, total paid $11,616.12, interest $1,616.12; card 29.99% at $322.67/mo: 61 months (60 full payments + a final $111.77 payment), total paid $19,471.97, interest $9,471.97; the personal loan wins by $7,855.85 in interest and 25 months. |
| loan APR 12% | same model | Debt $10,000.00, loan 12.00% / 36 months: payment $332.14/mo, total paid $11,957.04, interest $1,957.04; card 24.00% at $332.14/mo: 47 months (46 full payments + a final $181.51 payment), total paid $15,459.95, interest $5,459.95; the personal loan wins by $3,502.91 in interest and 11 months. |
The math is first-principles: the loan payment is the amortising formula with the payment rounded to cents, the loan total is the rounded payment times the months, the card charges interest monthly on the balance at APR divided by 12 with the monthly interest rounded to cents, and the winner is decided from the ROUNDED interest gap. Every figure is rounded to cents half-up. What the model cannot do is price YOUR loan or card: it does NOT model origination fees, annual fees, or late fees; it does NOT model a card minimum payment (usually 1–2% of the balance, which stretches the payoff far longer); it does NOT model rates that change over time; and it treats the loan rate as fixed for the whole term, which a variable-rate loan is not. Rates here are illustrative, not offers. Use it to see how much the rate matters — then check a real quote before you borrow.
Bright Side Kit. "Personal Loan vs Credit Card: Which Costs Less in 2026?" https://brightoolbox.com/personal-loan-vs-credit-card/ Accessed October 26, 2026.The personal loan on the defaults — by $4,143.04. The same $10,000 at the same $322.67 a month costs $1,616.12 in interest on a 10% loan and $5,759.16 on a 24% card. The answer follows the rate: whichever side charges less wins.
Put the same debt and the same monthly payment on both sides, then subtract the interests. The only difference is the rate, so the gap is pure rate difference, compounded.
10.00% — the flip point. The exact card APR is 9.9996%; at the displayed 10.00% the card takes 37 months and costs $1,616.20, so the loan wins by $0.08. Below 10% the card wins, above it the loan wins.
$393 a month at 24% APR. The exact formula payment is 392.3285; at $393 the card takes 36 months and costs $4,113.08 in interest. At the displayed $392.33 the card takes 36 months and costs $4,123.78 in interest. $392 takes 37 months.
The card clears in 26 months and costs $2,898.75 in interest. The loan still wins on interest by $1,282.63, but the card finishes 10 months sooner — speed vs cost.
Yes — at a low enough rate. At a 0% card APR the card costs $0.00 in interest over 31 months and beats the loan by $1,616.12. At 9.99% the card wins by $1.88.
The first month’s interest is $200.00 — more than the payment. At 24% APR the monthly interest on $10,000 is $200.00, so a $100.00 payment does not even cover the interest and the balance grows every month.
22 months at 10% on $10,000. At 22 months the payment is $499.37 and the interest is $986.14; at 23 months the interest is $1,030.34 — one month longer breaks the $1,000 ceiling.