How to build business credit for your limited company

Your company builds credit by leaving a good record in the places the credit agencies look: Companies House, your bank, your suppliers, and your lenders. File on time, pay on time, keep the company's borrowing in the company's name, and don't apply for credit you don't need. None of it is complicated and none of it is quick, which is why the time to build your business credit score is before you need to borrow against it.

What catches people out is how little of it anyone tells you. In our research, published in March 2026, 21% of business owners said they didn't understand their business credit score – about 1.1 million companies. Almost nothing on your file is put there by you, so knowing who reports what is the difference between the habits that help and the housekeeping that changes nothing.

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What is a business credit score?

A business credit score is a number a credit reference agency gives your company to sum up how likely it is to pay what it owes. Lenders use it to decide whether to offer you credit, how much, and on what terms. Suppliers, insurers, and landlords check it too.

Four agencies hold company credit files in the UK: Experian, Equifax, Creditsafe, and Dun & Bradstreet. Each scores its own file on its own scale, so your company has several scores and they don't match. No threshold counts as good everywhere, so our guide to what counts as a good business credit score is the one to read on that. You'll also see TransUnion named as a business credit agency: it holds personal files rather than company ones, which is why lenders search it for directors instead.

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What is the difference between a personal and business credit score?

Your personal score is about you and your own borrowing. Your company's score is about the company, which is a separate legal entity with a credit file of its own.

The two meet in two places. While the company's file is thin, which it is for the first year or two, lenders look at the directors as well. And most unsecured business borrowing asks a director for a personal guarantee, which makes you personally liable if the company can't repay. For example, every new Flexi-Loan customer needs one from at least one director, though not every director has to sign.

So you can't keep your personal credit out of it at the start, and poor personal credit can count against an application even when the company is trading well. Build the company's own record steadily and it carries more of the weight each year – how your personal credit score affects your business has the detail.

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What's on your company's credit file, and who puts it there

Almost everything on the file is put there by somebody else, and knowing which of them reports what tells you where your effort pays.

• Companies House. Your registered address, your directors, your industry code, and your filing history, including anything filed late. It's all public, and the agencies take it straight from the register.
• Your bank. Under the Commercial Credit Data Sharing scheme, set up by legislation in 2015, nine designated banks have shared current account turnover and balances, and the performance of business loans and cards, with the main commercial agencies since 2017. It covers companies with turnover up to £25m, so how you run the account is reported whether you ask for it or not.
• Your suppliers. Some share how quickly you settle invoices against the terms they gave you. Not all of them do, and it's worth asking which.
• Your lenders. Every lender reports how each facility is being repaid. We report the status of every iwoca loan to Experian and Equifax every month, each loan as its own account. That cuts both ways: a loan repaid on schedule leaves a record of on-time payments, and a missed payment shows up on the next monthly report.
• The courts. County court judgments and insolvency filings are public, and the agencies pick them up without anybody telling them.

Some of what the agencies weigh isn't yours to change. Trading history, sector, and the size of the balance sheet all feed in, and a young company in a sector with a high failure rate is scored more cautiously than an established one in a steady sector. There's nothing there to fix. The parts you control are the filing, the paying, and the borrowing.

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How to build and boost your business credit score

Seven habits do most of the work, in the order worth starting them in.

1. Get your Companies House record right, and file on time

Your file starts with the register, so start there too. Check that your registered office, your directors, and your industry (SIC) code are right and still true: a wrong address or a director who left years ago makes the company harder to match and verify. You can file changes with Companies House yourself, and the agencies pick them up from there.

Then file on time. First accounts are due 21 months after you register, and after that annual accounts are due nine months after your financial year ends. Late filing costs money – £150 if you're up to a month late, up to £1,500 beyond six months, and double that two years running – but the penalty is the smaller problem, because the late filing sits on a public record that every lender, supplier, and insurer looking at you can see. Don't file at all and the company can be struck off. Filing early does the opposite: it puts current figures in front of whoever is assessing you, instead of leaving them to work from the year before.

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2. Open a business bank account

Creating a business bank account will help build your company's financial profile and keep your personal and business finances separate. Then use it properly: the money moving through it, the balance it holds, and any bounced direct debits are the part your bank reports. An account that's active, funded, and never in unauthorised overdraft does more for your score than most of the things directors worry about.

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3. Pay your bills and financial obligations on time

This is the habit that matters most, and it's measured more precisely than people expect. Payment performance is judged against the terms you agreed, not against when somebody chased you: settling an invoice inside its 30-day term counts, settling it a week after the due date doesn't.

If a month is going to be tight, talk to the supplier or the lender before the due date rather than after it. An agreed later date is a different thing from a payment you simply missed.

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4. Establish trade credit partnerships

Trade credit is a supplier letting you pay after delivery instead of up front, and net 30 terms mean you settle within 30 days of the invoice. It's common in construction and retail, and it does two things at once: it eases the pressure on your cash flow, and it builds a payment record somebody else can vouch for.

So it's worth asking a supplier whether they share their ledger with the credit agencies, and whether they'd give you a trade reference – Dun & Bradstreet accepts them. Start with the suppliers you buy from every month, and keep the first limits small enough that paying early is easy.

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5. Use credit responsibly

A company that has never borrowed has nothing to show, so you can't fix a thin file entirely without using credit. The point isn't to borrow for the sake of it. It's that borrowing for something the business needs, and repaying it as agreed, is the record.

Business credit cards are the usual starting point, as long as the provider reports to the agencies and you clear the balance. Keep balances well within your limits, and expect most providers to ask a director for a personal guarantee.

If you're waiting on an invoice, an iwoca Flexi-Loan can cover the gap, and you can clear it with no early repayment fee once your customer pays. We lend to UK limited companies, and because we report the status of every loan to Experian and Equifax every month, repaying on schedule leaves a record of on-time payments behind it. It works the other way too, so check the business can comfortably carry the repayments before you borrow from anybody.

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6. Space out your credit applications

A lender's hard search is recorded on your company's file, and several in a short time read as a company shopping urgently for money. A soft search isn't recorded and doesn't affect anything, which is why checking your own score as often as you like costs you nothing.

Lenders differ in which file they search and when, so it's a fair question to ask before you apply. When you apply to us we run a soft search on the directors' personal files, so your personal credit isn't affected by asking, and how we assess applications sets out what we look at. Either way, apply when you need the money rather than to find out what's available.

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7. Check your credit report, and correct what's wrong

You can't build what you can't see, and errors are more common than directors expect: a judgment registered against an address you left, a filing the agency hasn't picked up, an account that was never yours. Getting one corrected is the fastest improvement available to most companies.

iwoca Credit Compass is free, with no paywalls or hidden fees. It shows your Equifax business credit score alongside four more – your loan and credit history, your financial performance, your Companies House record, and an overall health score – with the factors affecting each one and the areas worth working on. It refreshes every month, and it's built to show what lenders like us see and value.

That gap is why it exists. In our SME Expert Index, which surveys brokers, 71% said the businesses that get turned down most lack guidance on improving their creditworthiness, and 62% said those businesses didn't understand why they were refused (February 2026).

For the other ways to see your file, there's our guide to getting a free business credit report, and how to check and monitor your business credit score.

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Building business credit from scratch

A newly incorporated company has a credit file with almost nothing in it. The agencies open one from your Companies House record, and until there's a payment history to look at, the score they can give you is cautious by default. That's a stage to get through rather than a problem to solve.

What's worth doing in the first few months: get the register right, open the business account and start using it, put the company's contracts – phone, broadband, software, utilities – in the company's name rather than yours, and open one or two small supplier accounts on 30-day terms that you pay early. If a customer or a tender asks for a D-U-N-S number, Dun & Bradstreet issues one free.

The step change comes when you file your first set of accounts. Until then, anyone assessing you works from the register and whatever payment data exists; afterwards there are figures. That's why the first deadline matters more than it looks, at 21 months after you register: miss it and the company starts its scored life with a late filing on the record.

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How long does it take to build business credit?

There's no fixed timeline, and anybody who gives you a date is guessing. What you can count on is the reporting rhythm: your bank and your lenders report monthly, so a run of on-time payments starts to show within a month or two.

Your filing history updates when you file, and your accounts update once a year. So correcting an error or settling a judgment can change your file in weeks, while building a record where there wasn't one takes as long as the payments take to accumulate – months rather than days, with the first full set of accounts the milestone that usually matters most.

Which also answers the 30-day question. In a month you can fix wrong details, file anything overdue, satisfy a judgment you've settled, and start paying everything to terms. What you can't do in a month is make a new file look like an old one.

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What damages your company's credit score

Not everything that goes wrong weighs the same. These are the things that do real damage:

• A county court judgment. A CCJ is the heaviest single mark on a company's file. Records are kept for six years unless you pay the full amount within a month of judgment, in which case it comes off. If you've already paid one, don't assume the agencies know – apply for a certificate of satisfaction, form N443 and send it to them.
• A default. Once an account has defaulted it stays on the record as a default even after you clear it: paying adds a settlement date, it doesn't undo the history. That's why talking to a lender before a payment is missed is worth more than it feels like at the time.
• Late filing. Public, permanent on the filing history, and read as a signal about how the company is run.
• A cluster of applications. Several hard searches close together look like urgency, whatever the reason.
• A mistake nobody disputed. Wrong addresses, and judgments registered against an office you've left, are common, and they sit there until somebody challenges them.

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How can you recover from a poor business credit score?

Fix the file first, then the behaviour, then wait. In that order.

Dispute anything that's wrong, because it costs nothing and can move your score immediately. File anything overdue. Get a certificate of satisfaction for any judgment you've settled. Then talk to the people you owe: an agreed payment plan is a different thing from a missed payment, and most lenders would rather hear from you early than find out later.

After that it's a clean run, and the arithmetic is on your side: the things that damage a score most are also the things that drop off.

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What a stronger business credit score gets you

A good score isn't a trophy, it's a set of doors. Lenders who wouldn't have looked at you will. The ones who were going to lend anyway offer more, over longer, at a lower rate, because they're pricing less risk. Suppliers give you terms instead of asking for payment up front, which is working capital you didn't have to borrow.

All of it arrives before you need it. The company that can borrow cheaply in a difficult month is the one that filed on time and paid on time in the easy ones, which is the argument for starting while nothing is urgent.

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Sources

• Accounts and tax returns for private limited companies, and penalties for late filing – gov.uk
• County court judgments for debt – gov.uk
• An introduction to the CCDS scheme – Dun & Bradstreet
• Nine ways to improve your business credit score – British Business Bank