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Startup funding, explained: every route and what it really costs

Every funding route costs something — interest, equity, or time. The founders who win pick the cheapest cost for their stage. This guide maps the whole UK landscape.

Start with the question lenders will ask you

Before any application: what exactly is the money for, and how does it come back? “Growth” isn't an answer. “£40k of stock that turns every 60 days at a 45% margin” is. Funding conversations go well when the use of funds is specific and the repayment source is visible in your numbers.

Then match the route to the job:

  • Buying things that earn (stock, equipment, a van) → debt or asset finance. Cheapest money, keeps your equity.
  • Smoothing cashflow gaps → working capital, invoice finance, revolving credit.
  • Building something unproven (product, R&D, market entry) → grants first, then equity. Debt against uncertainty is how founders end up personally guaranteeing a failed experiment.

The full guide walks through every route on the UK market — eligibility, true cost, timelines — plus the application pack that gets yeses.

What this guide covers

  • The full menu: loans, grants, debt, RBF and equity compared
  • What each route really costs — including the hidden ones
  • What lenders and investors actually check
  • How to search 1,000+ providers in one pass

The menu, route by route

1. Start Up Loans (government-backed)

£500–£25,000 per founder (up to £100,000 per company across four co-founders), fixed 7.5% interest, 1–5 year terms, no application fee, no early repayment fee, plus up to 12 months' free mentoring. It's a personal loan for business use, so no trading history needed — the standard first cheque for pre-revenue and early-trading businesses. The rate rose from 6% to 7.5% on 6 April 2026, and the eligibility window widened at the same time from 36 months of trading to 60 months; anyone who drew down before that date keeps 6% for the life of their loan.

2. Grants

Free money, competitively awarded. Innovate UK for genuine innovation; regional growth funds; sector schemes (green tech, creative, food production). The real cost is time — applications take days of work and success rates are low — but a won grant is non-dilutive and non-repayable. The trick is knowing what's open right now, which changes monthly: our Swoop-powered portal tracks live schemes so you don't have to.

3. Bank and alternative debt

Term loans, overdrafts, revolving credit facilities. Banks want 1–2 years of trading history and often personal guarantees; alternative lenders move faster at higher rates (think 8–20%+ APR against a bank's 7–12%). Always compare the total cost of credit, not the monthly payment.

4. Asset and invoice finance

Asset finance spreads equipment costs against the asset itself (easier to get — the kit is the security). Invoice finance advances you 70–90% of unpaid invoices immediately; powerful for B2B startups whose customers pay on 60-day terms, expensive if you treat it as permanent capital.

5. Revenue-based finance

For businesses with recurring revenue: an advance repaid as a percentage of monthly income. No dilution, no fixed repayment cliff — but effective costs often land between debt and equity. Read the multiple carefully (a 1.4× repayment cap on money repaid in 14 months is very expensive money).

6. Equity

Angels, then funds. The most expensive money you'll ever take — a 15% seed stake in a business that works costs millions later — and the only kind that suits genuinely unproven, high-upside bets. UK angels rely heavily on SEIS/EIS tax relief (SEIS: up to £250k raised, investors get 50% income tax relief; EIS: up to £24m lifetime, 30% relief), so getting advance assurance from HMRC before you pitch is near-mandatory. That's an accountant job — it's ours, if you want it.

A worked comparison: £40,000, three ways

The figures below are illustrative, for a company that needs £40,000 to buy stock and hire one person.

  • Start Up Loans. Two founders take £20,000 each at a fixed 7.5% over five years. Repayments are £801.51 a month, total repaid £48,090.60, so the money costs £8,090.60. No equity leaves the business, and the founders carry it personally.
  • Revenue-based finance. £40,000 advanced against a 1.4× repayment cap, cleared out of monthly revenue in fourteen months. You repay £56,000, so the money costs £16,000 — roughly double the loan — but nothing is fixed and nothing is guaranteed personally.
  • Equity. £40,000 for 10% of the company. It costs nothing today and never has to be repaid. If the company is worth £4m at exit, that 10% is £400,000 — ten times the cash you raised, and the reason equity sits last on the list rather than first.

None of these is wrong. The point is that the same £40,000 costs £8,090, £16,000 or £400,000 depending on which document you sign, and the cheapest one is usually the one founders find least exciting.

What every lender and investor checks

  • Clean, current accounts — bookkeeping up to date, no unexplained director's loans.
  • A forecast that survives questions — monthly cashflow, assumptions stated, downside case included.
  • Personal credit — for early-stage debt, your file is the company's file.
  • Use of funds — specific, and matched to the product they sell.
The order matters Cheap money first: grants → government-backed loans → asset/working-capital finance → RBF → equity. Founders who pitch equity for a stock purchase are overpaying by an order of magnitude.

How the portal fits

Our funding portal, powered by Swoop, takes one profile and matches it against 1,000+ lenders, grant schemes and finance providers — soft search only, no obligation. Then we do the part software can't: sense-check the real cost of each offer against your cashflow before you sign. Free to every client.

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Quick answers

From this guide

What funding can a brand-new UK startup get?

Start Up Loans are the usual first cheque: £500 to £25,000 per founder at a fixed 7.5%, over one to five years, with no application fee and up to 12 months of free mentoring. They are open to businesses that have been trading for less than five years, including pre-revenue ones, and up to four co-founders can each apply to take a single business to £100,000. Bear in mind they are personal loans to the founder rather than company debt. Grants and asset finance are also realistic well before a bank will lend, and R&D tax relief is worth checking before you raise anything at all.

What is SEIS advance assurance?

It is a pre-approval from HMRC confirming that your company and the proposed share issue look likely to qualify for SEIS or EIS investor tax relief. It is not legally required and it does not bind HMRC, but most UK angels treat it as a precondition for investing, because without it they are relying on your assessment of your own eligibility. Apply before you pitch and before any advance subscription agreement is signed, since HMRC reviews the actual documents and there is no way to change a term it objects to once investors have signed and paid. Allow several weeks for a response.

Do funding searches hurt my credit score?

Matching through our portal uses soft searches only, which are visible to you but not to other lenders and have no effect on your score. A hard search, which is recorded on your file and can be seen by others, happens only when you formally apply to a specific lender. This matters more for early-stage founders than most realise, because a Start Up Loan and much early bank debt are underwritten against your personal credit file rather than the company's. Several hard searches in a short window reads as distress, so apply selectively rather than everywhere at once.

Loan or investment — which is better?

If the money buys something with a visible return, such as stock that turns, equipment that earns or a hire with a measurable output, debt is almost always cheaper and it keeps the whole company. Equity suits genuinely unproven work — a product that may not exist for two years, a market that may not respond — where fixed monthly repayments against uncertainty are what actually kills the business. The comparison above puts numbers on it: the same £40,000 costs £8,090 as a Start Up Loan or £400,000 as a 10% stake in a company that works.

How long does startup funding actually take?

Plan on weeks for debt and months for equity. A Start Up Loan application usually runs to four to eight weeks including the business plan and cashflow forecast the assessor requires. Asset and invoice finance can complete in days once the paperwork exists. Grant rounds run to published deadlines, so the timetable is set by the funder rather than by you, and decisions commonly take three months or more. An equity round, from first conversation to money in the bank, realistically takes around six months. Work backwards from the date your cash runs out, not forwards from today.

Should I sign a personal guarantee?

Treat it as a real cost rather than a formality, because it removes the protection the limited company exists to give you. Most early-stage bank lending asks for one, and Start Up Loans are personal borrowing by design. Before signing, establish what is actually being guaranteed: the whole facility or a capped amount, whether it is joint and several with your co-founders, and what happens to it if you leave. A guarantee against an asset that could be sold to repay the debt is a different proposition from one against working capital already spent on wages.

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