Personal Loan vs. Credit Card for a Big Purchase
A personal loan generally suits a large, one-time purchase better than a credit card, because it carries a fixed rate and a fixed payoff date, while a credit card's variable rate and revolving structure make the total cost open-ended if only minimum payments are made — a credit card is better suited to smaller purchases you're confident you can pay off within a billing cycle or two.
Both are common ways to finance a purchase you can't pay for outright, but the mechanics of interest accrual differ meaningfully between them.
Why a fixed-term loan controls total cost better
A personal loan's fixed rate and fixed term mean the total interest is calculable upfront and doesn't change based on your payment behavior — you know exactly what the purchase will ultimately cost the moment you take the loan, which a revolving credit card balance doesn't offer.
Where a credit card still makes sense
For a purchase you're confident you can pay off quickly, a credit card avoids the fixed commitment and paperwork of a loan application — and some cards offer an introductory 0% APR period that, paid off within that window, can be cheaper than a personal loan's interest entirely.