The short version: for a 30-day, $1,500 borrow, a personal line of credit costs you about $12, overdraft costs about $33, and a credit-card cash advance costs about $40. The line of credit wins by a wide margin — but only if you already have one approved before the emergency hits.

The $1,500-for-30-days worked example

Same scenario for all three: a vet bill drops, you need $1,500 cash today, and you can repay in full on day 30 from your next paycheque.

When each option actually makes sense

Personal line of credit — the default winner

Cheapest by a wide margin, but requires advance setup. I opened mine through my main bank when I was already in there refinancing a mortgage — took 20 minutes and didn't pull a hard credit check because they already had my full file. The catch: most banks won't approve a $5K+ LOC unless you've been with them 12+ months and have $40K+ income on file. If you don't have one yet, apply before the emergency.

Overdraft — fine for tiny, infrequent gaps

Pay-per-use overdraft is genuinely cheap if you only use it once or twice a year and only for a day or two. The math falls apart at $1,000+ for 30+ days. Avoid the "monthly fee" overdraft plans ($5/month whether you use it or not — that's $60/year for the privilege of a $500 buffer).

Credit card cash advance — emergency only

The most-expensive of the three for any amount, but instantly available with no approval. Justifiable when (a) it's truly an emergency, (b) you can repay within 1–7 days, and (c) the alternative is missing a bill that triggers a worse penalty (like an NSF or eviction notice). Otherwise it's a bad option.

Cash-advance apps — situational, watch the tips

Apps like Bree, KOHO Cover, and Nyble price themselves below cash advances on their marketing page, but the effective cost climbs fast once you add the $2.99 monthly subscription, the $5 instant-transfer fee, and the suggested "tips" (sometimes presented as opt-out, often defaulted to $5–$10). For a $200 advance repaid in 7 days, $15 in fees is a 390% effective APR — same as a payday loan.

What about Buy Now Pay Later for emergencies?

BNPL (Klarna, Afterpay, Sezzle, PayBright) only works at the point of purchase — you can't use it to cover rent, a vet bill, or cash-only situations. It's also starting to appear on credit reports in 2026, so the "free money" framing is changing.

Which one I'd use, in order

1. Personal line of credit if I had one — almost always cheapest.
2. Pay-per-use overdraft for $200 or less for <5 days.
3. Credit card cash advance only if the alternative is missing a bill.
4. Cash-advance app as a last resort if I can't get the above and the alternative is a payday loan.
5. Never a payday loan. The math is brutal and it's structurally designed to roll over into a debt trap.

Bottom line

The single best move is to apply for a personal line of credit during a calm period of your financial life — before you actually need it. Sitting unused, it costs you nothing. The day a $1,500 emergency hits, you'll save $20–30 versus a cash advance and avoid the triple-digit effective APR of cash-advance apps. Run the numbers on your specific situation with the credit card payoff calculator before deciding.