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The first question most business owners ask about a loan is "how much can I get?" It is the wrong question to start with. A more useful one is "how much can my business comfortably repay?" — because that is what a responsible lender actually assesses. The headline maximum a lender advertises is a ceiling almost no applicant reaches; the figure you will be offered is driven by your affordability, your trading history, and the specific numbers in your bank account. This guide explains what determines your real borrowing capacity and how to estimate it before you apply.
Borrowing capacity is about affordability, not a maximum
Lenders do not lend the largest amount they can. They lend the largest amount they believe you can repay without strain. This is both a regulatory expectation and simple commercial sense — a loan the borrower cannot service benefits no one. So the assessment centres on one core question: after all your existing commitments, how much surplus does your business generate each month, and how much of a new repayment can that surplus absorb?
This is why two businesses with identical turnover can be offered very different amounts. The one with lower overheads, fewer existing debts and a longer trading history has more free cash flow to service a new facility, so its borrowing capacity is higher.
What lenders actually look at
When a lender assesses how much to offer, they weigh several factors together rather than applying a single formula:
- Monthly revenue. The cash actually flowing through your business bank account, usually averaged over the last three to six months. Consistent, predictable revenue supports a larger facility than the same average delivered in erratic spikes.
- Existing debt commitments. Every loan, lease, hire-purchase agreement and overdraft you already service reduces the surplus available for a new repayment. A business already carrying significant debt has less headroom.
- Net profitability. Revenue matters, but what is left after costs matters more. A high-turnover, low-margin business may support less borrowing than a smaller but more profitable one.
- Trading history. A longer track record gives the lender more data and more confidence. Newer businesses are typically offered more conservative amounts until they establish a pattern.
- The purpose and term. A short-term facility for a clearly defined, revenue-generating purpose is easier to support than an open-ended request for general working capital.
A simple way to estimate your own capacity
You can approximate what a lender might see using figures from your own accounts. Work through these steps:
Step one — find your monthly surplus. Take your average monthly revenue (use actual bank receipts, not invoices raised). Subtract your average monthly operating costs and your existing debt repayments. What remains is your net monthly surplus — the pool available to service new borrowing.
Step two — apply a coverage buffer. A prudent lender does not expect you to commit your entire surplus to a new repayment. A common guide is that a new monthly repayment should sit comfortably below your surplus — leaving a clear margin for the unexpected. If your surplus is £3,000 a month, a repayment of £1,000–£1,500 is far more sustainable than £2,800.
Step three — translate the affordable repayment into a facility size. Once you know a comfortable monthly repayment, the loan amount it supports depends on the term and the cost of borrowing. A longer term means a larger principal for the same monthly payment, but more total interest. Our repayment calculator lets you work backwards from an affordable monthly figure to a realistic amount.
Why the amount offered may differ from what you asked for
It is common to be offered less — or occasionally more — than you requested. If the offer is lower, it usually means the affordability assessment suggests the requested amount would stretch your cash flow. That is not a rejection of your business; it is the lender sizing the facility to what the numbers support. If you are offered more than you asked for, borrow only what you need — a larger facility costs more and serves no purpose if the extra sits unused.
If the offered amount is lower than the sum you genuinely need, the productive response is to look at the underlying constraint: are existing debts consuming your surplus? Is revenue erratic enough to make the lender cautious? Addressing the constraint improves both the amount available and the rate.
Improving your borrowing capacity over time
Borrowing capacity is not fixed. The levers that increase it are the same ones that make a business healthier: growing revenue, improving margins, reducing existing debt, and building a longer, cleaner trading record. Consistent, well-managed accounts and a stable revenue pattern do more to raise your capacity than any single application tactic. If you want to borrow more in six months than you can today, the path is to strengthen the cash flow the lender measures.
Frequently asked questions
- Does a higher turnover always mean I can borrow more?
- Not necessarily. Turnover is only the starting point. What matters more is the surplus your business generates after costs and existing debt. A high-turnover business with thin margins and significant existing borrowing may have less capacity than a smaller, more profitable business with no other debt. Lenders look at what is left over to service a new repayment, not the top-line figure alone.
- Will applying for the maximum I can get affect my chances of approval?
- Applying for an amount that is clearly beyond what your cash flow supports can lead to a decline or a reduced offer, because the affordability assessment will flag it. It is generally better to apply for an amount your own figures suggest is comfortable. If you are unsure, an eligibility check or a conversation with the lender before a full application helps you calibrate the request.
- How does my existing debt affect how much I can borrow?
- Every existing repayment reduces the monthly surplus available to service a new facility. A lender totals your current commitments — loans, leases, hire purchase, overdraft, and any director loans being repaid — and assesses a new loan against what remains. Reducing existing debt before applying is one of the most direct ways to increase your available capacity.
- Can a newly incorporated company borrow at all?
- Yes, though typically at more conservative amounts until a trading pattern is established. Lenders that work with newer businesses look closely at the available bank statements, the sector, and the purpose of the facility. A company trading for six months with steady receipts is in a stronger position than one trading for six weeks. Our eligibility check gives a quick read on where your company stands.