The right tool depends on three numbers: how much you owe (or want to charge), how long you need to pay it back, and your credit score. Below is the full comparison; the table at the end summarises the winner at each balance level.
Feature comparison
| Feature | 0% APR card | Personal loan |
|---|---|---|
| Interest cost | $0 during intro, then regular APR (17 to 30%) | Around 7% to 15% fixed |
| Fees | 0 to 5% on BT, often 0 on new purchases | 0 to 8% origination |
| Repayment period | Up to ~24 months at 0% | 12 to 84 months fixed |
| Payment flexibility | Pay any amount above the minimum | Fixed monthly payment |
| Credit impact | Hard inquiry, increases available credit | Hard inquiry, adds installment account |
| Best balance range | $1,000 to $15,000 | $5,000 to $50,000 |
The case for a 0% APR card
- Balance under $15,000
- You can pay off in 15 to 24 months
- FICO score is 670+
- You are disciplined about the payoff plan (no temptation to extend)
- You also want some flexibility on monthly payment amount
The case for a personal loan
- Balance over $15,000
- You need 3 to 7 years to pay it back
- You want a locked-in fixed monthly payment
- FICO score is below 670 (loans available at lower scores than long-runway cards)
- You are consolidating multiple debts into one
- You worry about your own discipline (the fixed term forces structure)
Total cost by balance, both options compared
Numbers below assume a 0% APR card with a 21 month runway (no BT fee on new purchases) vs a personal loan at 7% over 36 months. Real rates vary; use the numbers as an order-of-magnitude guide, not a quote.
| Balance | 0% card total interest | Personal loan total interest | Winner |
|---|---|---|---|
| $5,000 | $0 | $558 | winner: card |
| $8,000 | $0 to $400 (BT fee) | $893 | winner: card |
| $12,000 | $0 to $600 (BT fee) | $1,340 | winner: card |
| $20,000 | Hard to clear in 21 mo | $2,233 | winner: loan |
| $30,000 | Not realistic on a card | $3,350 | winner: loan |
When to do both
For projects in the $20,000 to $30,000 range, splitting the spend between a 0% APR card and a personal loan often beats either alone. Charge what you can confidently clear in 15 to 18 months to the card; take the loan for the remainder. You get the best of both: interest-free runway on the part you can pay quickly, fixed-rate certainty on the rest.