What you're expanding decides how you pay for it. Equipment and vehicles are funded against the asset. A second site's fit-out, and the months before it pays for itself, is a job for a loan. Stock and wages for a bigger contract are working capital. A new market, or anything whose payback you can't put a date on, is where retained profits or outside investment make more sense. The harder question isn't which route. It's how much to raise and over how long, because expansion goes wrong far more often from raising too little than from picking the wrong product.

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What you're expanding decides how you fund it

Start from the thing you're buying. That narrows the options to one or two before cost comes into it, and it stops you comparing products that were never going to fit the step.

Most growth steps take one of these shapes, and each one points at a different kind of money:

The cheapest money is the money you already have. Funding a step from retained profit costs you no interest and no shares, and it's usually the right answer for something small enough to absorb. The catch is what it leaves behind: spend the reserve on a fit-out and you have no buffer if trading dips while the new site finds its feet. Plenty of companies split the difference, paying for part of the step from profits and borrowing the rest.

Two of those rows get mixed up more than any others. A loan suits a defined cost with an end to it, so you know the repayment and can budget around it. Working capital suits a cost that grows as you grow, like stock or payroll on a bigger contract, where what you need goes up and down with the work. If you're weighing up the wider set of options, including the ones that rarely suit a growth step, our guide to sources of finance covers the full range.

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Government-backed loans and grants, and who they are for

The Growth Guarantee Scheme is worth knowing about before you compare lenders. It makes up to £2 million available per business group, and it covers term loans, overdrafts, asset finance, invoice finance, and asset-based lending. To qualify, your business has to trade in the UK, have turnover of no more than £45 million, generate more than 50% of that turnover from trading activity, be viable, and not be in difficulty. The British Business Bank administers it for the Secretary of State for Business and Trade, and you apply through one of its accredited providers rather than directly. Those terms come from the gov.uk page on the scheme, published on 29 June 2026. iwoca isn't an accredited provider, so a Flexi-Loan sits outside the scheme. Our guide to government-backed business loans explains how the lending itself works.

Grants don't need repaying, which makes them the best money available and the hardest to get: they're competitive, tied to a project a funder wants to see happen, and they usually pay out after you've spent your own cash. Treat one as a bonus rather than a plan, and see our guide to small business grants for what's out there.

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Borrow it or sell shares: what you are really choosing

This is the real fork, and it isn't mainly about cost. Debt suits a step that can pay for itself out of trading within a few years: you take on a repayment, and when it's done you own everything you did before. Equity suits a bet that's bigger than your trading can carry, or whose payback you can't date. You give up part of the company permanently, and in return nobody is asking for money back next month.

A quick way to see which side your expansion sits on:

On the equity side, angel investors put in their own money and often their contacts, venture capital funds write larger cheques for companies that could grow very fast, and crowdfunding raises smaller amounts from a lot of people. Mezzanine finance sits between the two and usually needs specialist advice. Most expansions by established companies never get this far, and that's fine: selling shares to open a second kitchen is an expensive way to buy an oven.

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What people mean by growth capital and growth finance

Growth capital is money used to grow a business that's already trading, as opposed to starting one or covering day-to-day costs. It can be debt, equity, or a mix, so the term tells you what the money is for rather than where it comes from. 'Growth finance' usually means the debt side of the same idea.

In investor language the words get narrower. Growth equity means buying a minority stake in a company that's already trading and growing. Venture capital backs younger companies. Private equity usually buys control. If you're a director with a lease to sign, none of those three is likely to be your route, and growth capital just means the money behind your next step.

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How much to raise: the cost, the months before it pays, and a buffer

Add three things: what the step costs, what it costs to run until it pays its way, and a contingency. The middle one is the one that gets left out, and it's the reason expansions fail from raising too little rather than from borrowing at all. New staff need paying and shelves need filling before the first customer walks in.

Say you're opening a second site. Here's how the number builds, with illustrative figures:

There's a name for getting this wrong in the other direction. Overtrading is taking on more work than your cash can support, and it happens to companies whose sales are rising, not falling, because an expansion's costs land before its income does. A cash flow forecast that shows money leaving and arriving week by week is the only reliable way to see it coming.

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Match the term to how long the step takes to pay back

Pick a term at least as long as the step takes to earn back what it cost. Then the repayments come out of the profit the expansion makes, rather than out of the rest of the business.

In the example above, suppose the new site adds £3,000 a month once it's running. It earns back the £66,000 in about 22 months before interest. So a two-year term is tighter than it looks: it leaves nothing for the interest and nothing for a slow start. Three years gives the site room to find its feet, and if it ramps faster than planned you're not stuck with the longer term, as long as your lender doesn't charge you for clearing it early.

That's also the test to apply if you're unsure whether to borrow at all. If you can't say roughly when the step pays for itself, you're not ready to put a term on it, and that's a reason to wait or to look at the equity side rather than to pick a shorter loan.

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What you can claim back on what you buy and what you borrow

If your expansion involves equipment, the tax treatment changes the number you need to raise, so check it before you borrow. Full expensing is open only to companies, and it lets you deduct 100% of the cost of qualifying plant and machinery from your profits before tax in the year you buy it. The item has to be new and unused, bought from 1 April 2023, and not a car. The annual investment allowance works alongside it, letting you deduct the full value of most plant and machinery up to £1 million, and it isn't limited to new kit – so second-hand machinery can qualify there. Cars are out of both.

Interest is treated differently from the thing you bought. For a limited company, interest on money borrowed for the trade is normally an allowable cost for corporation tax under the loan relationships rules. None of this is a reason to borrow on its own, and the detail depends on your company's circumstances, so get your accountant to confirm it before you count on it.

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Where an iwoca Flexi-Loan fits a growth step

Growth steps come with dates attached: a lease has a deadline, a machine has a price that holds until Friday. So what matters first usually isn't fast money, it's a fast answer. A decision is typically made within 24 hours, though it might be longer depending on the complexity of the request, and a quick decision isn't a light one – we look at your revenue and what you can afford to repay before we make an offer. Then you have 30 days to draw down, so the money can be agreed before you sign anything and the interest starts when you spend it rather than when you're approved.

The iwoca Flexi-Loan is a business loan with flexible repayment options, from £1,000 to £1m. You choose a fixed term of between 12 months and five years, so the repayment is a line you can put straight into the forecast you've just built. And because there's no fee for repaying early, you can clear it as soon as the new site is ahead of plan – many of our customers only take out our finance for a few weeks, or even days. If it's slower instead, overpaying earns you a payment holiday, and if phase two arrives early you can ask to top up rather than start again.

One limit, stated plainly: if your expansion is one machine or one van, asset finance is usually cheaper, because the asset secures the borrowing. A Flexi-Loan earns its place when the step isn't a single asset – a fit-out plus stock plus three months of wages – or when you'd rather nothing was charged over the thing you're buying. We take no shares and no charge over your property, we lend to UK limited companies, and every new Flexi-Loan needs a personal guarantee from at least one director.

Flexi-Loan in action: JBN Beverages Janet Theodore's drinks brand was ready to launch, but the last stretch wasn't funded: product testing, and the ingredients to run it with. Funding from iwoca covered both, JBN completed all of its testing ahead of launch, and it has since signed contracts with Sysco and Tesco.com. Read the JBN Beverages story

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What to have ready before you apply

Have three documents to hand and the plan in a sentence: recent filed accounts, your bank statements, and your management accounts, plus what the money is for and when the step starts paying. Lenders and investors both move faster when they can see the step rather than just the sum.

It's also worth looking at your company the way a lender does before anyone else does. iwoca Credit Compass is free and shows your Equifax business credit score alongside four more scores and an overall health score, the factors moving them, and suggestions on what to work on first. If a loan looks like the right fit for your step, you can see what a Flexi-Loan could fund. Only borrow what your forecast says you can repay if the expansion takes longer than you hope.