Comparison · Borrowing · 2026
Credit Union Loan vs Payday Loan UK 2026
Both credit union loans and payday loans are marketed at people who need a small amount of money quickly, but the cost difference is enormous. Credit unions are legally capped at 3% a month; payday lenders are capped at 0.8% a day. Here is how the real cost, speed and eligibility compare in 2026.
TL;DR - 30-Second Summary
- - Credit union: capped at 3%/month, member-owned, slower approval, needs membership
- - Payday loan: capped at 0.8%/day and 100% total cost, near-instant, much more expensive overall
- - Rule of thumb: a credit union loan is almost always dramatically cheaper for the same amount and term
Side by Side: Credit Union vs Payday Loan
| Feature | Credit Union Loan | Payday Loan |
|---|---|---|
| Legal interest cap | 3% per month (approx. 42.6% APR) | 0.8% per day |
| Total cost cap | No FCA-style cap, but low rates mean low totals | 100% of amount borrowed |
| Default fee cap | Set by individual credit union rules | £15 (FCA cap) |
| Speed of funding | Same day to a few days | Often within hours |
| Eligibility | Requires membership, holistic affordability check | Online application, credit and affordability check |
| Ownership | Not-for-profit, member-owned | For-profit lender |
How Credit Union Loans Work
Credit unions are not-for-profit financial co-operatives owned by their members. You typically join based on where you live, work, or an affinity group, and can then apply for loans. Interest is legally capped at 3% a month on the reducing balance, though most loans are charged less.
Many credit unions offer a "save as you borrow" structure, encouraging a small ongoing savings contribution alongside loan repayments, which builds a financial buffer for the future.
How Payday Loans Work
Payday loans (formally "high-cost short-term credit") are small, short-term loans, typically repaid within one to three months, aimed at people needing money before their next payday. Since the FCA price cap introduced in 2015, interest and fees are limited to 0.8% a day and total cost is capped at 100% of the amount borrowed.
Even with the cap, borrowing £300 for a month at close to the maximum rate could cost around £72 in interest — far higher than the £3-£9 a credit union might charge for the same loan.
Worked Example: £300 Borrowed for 3 Months
At a typical credit union rate of 1% a month on the reducing balance, £300 over 3 months costs roughly £9-£15 in total interest. At the payday loan cap of 0.8% a day, the same £300 over the same period could cost £70-£150 or more, depending on the lender's exact pricing within the cap.
Who Should Choose What?
- - You can wait a day or two for funds
- - You want the lowest possible cost of borrowing
- - You have a poor or thin credit file but stable income
- - You have exhausted overdraft, credit union and DWP advance options
- - You genuinely need funds within hours
- - You are certain of being able to repay in full on the due date