0% and interest-free business credit cards: what actually exists in the UK

If you’re looking for a business credit card with a 0% purchase period, the short answer is that among the 15 UK business cards we track, none publishes one. None publishes a balance-transfer offer either.

What every one of them offers instead is the ordinary interest-free window on purchases, usually quoted as “up to 56 days”, and that window does more work than most people realise. This guide explains what it is, what the rates look like when you do carry a balance, and what that balance costs you.

Why 0% business cards barely exist

Consumer credit cards compete on 0% periods because the lender expects to make money later, when the promotional rate ends and a share of cardholders keep a balance. Business cards are a different market. Limits are set against the company and usually a director’s personal guarantee, balances are larger, and issuers would rather earn from interchange and annual fees than fund a year of free credit. So the offers that do exist on business cards are cashback and points, not 0% interest.

For a business, the question behind a search for 0% is often not really about finding a particular card. It is about the cost and length of borrowing. A credit card’s normal interest-free period can provide useful short-term cash-flow flexibility when purchases are paid off in full, but it is not a substitute for longer-term working capital. If a business expects to carry the balance for several months, the purchase rate and the cost of alternative finance matter more than the rewards attached to the card.

What “up to 56 days interest-free” means

Every credit card in our list charges no interest on purchases if you pay the statement in full by the due date. The “up to 56 days” is the longest gap you can get between a purchase and the payment date: buy on the first day of a statement period, get the statement at the end of the month, pay up to 25 or so days later.

Two things follow. First, the average purchase gets roughly half that, not 56 days. Second, it is interest-free only while you clear the balance every month. Pay even part of it late and interest is charged on the whole balance from the transaction date, at the card’s purchase rate. That is the rate the rest of this guide is about.

Purchase rate and representative APR are different numbers

This is where business card marketing is at its least helpful. Issuers publish two rates, and they are not interchangeable.

The purchase rate is the interest actually charged on a carried balance. The representative APR is the regulated headline: it includes the annual fee, assumes a £1,200 credit limit, and is the rate at least 51% of accepted applicants must get.

What a “from” rate actually means

A rate advertised as “from 14.9%” is the lowest rate available, not necessarily the rate most applicants will receive. The actual rate offered can depend on the business’s financial position, trading history, credit profile and the lender’s assessment of risk.

For a business comparing cards, the important distinction is that a “from” rate should not be treated as a promise. If you expect to carry a balance, compare the realistic rate you may be offered rather than assuming you will qualify for the lowest advertised figure. A card with an attractive headline rate can become significantly more expensive if your actual rate is higher.

The lowest business credit card interest rates

If you carry a balance, rewards stop being the thing that matters. Here is the calculator’s carry-a-balance mode at £5,000 a month, with about one month’s spend carried and interest charged at each card’s purchase rate:

If you need to borrow for longer than a month

A credit card at 14.9% is an expensive way to borrow for a year. If the real need is working capital rather than a payment tool, the honest answer is a business overdraft or loan, which we don’t compare and don’t link to. Use a card for what the interest-free window is good at: a month or two of float on purchases you’d be making anyway, paid off in full.

The calculator asks whether you usually pay in full. Answer it honestly. It switches the ranking to lowest cost if you say no, and that single answer changes which card wins more than anything else you tell it.

Ready to see your own ranking? Run the card calculator at /cards.