Long-Runway Tier (21-month family)
Best for: Five-figure debts where every extra month of 0% lowers your required monthly payment.
- Longest 0% APR runway currently on the market for new accounts.
- Some cards in this tier offer an extension if every payment is on time.
- Best statistical fit for $8,000 to $20,000 balances paid down monthly.
- 3% to 5% balance transfer fee adds roughly $300 to $500 on a $10,000 transfer.
- Post-intro APR typically prints in the high teens to high twenties depending on credit.
- Approval bar is real: most issuers want a 700+ score for the full 21 months.