A lender sets the limit from your debt service cover: the cash the business generates in a year divided by a year’s repayments on all its loans. Work backwards from the minimum cover a lender accepts and you reach the largest yearly repayment, and from that the largest loan.
Start from the cash the business generates. One measure is profit before interest, tax, depreciation and amortisation, less the corporation tax the company pays. Some lenders also take off spending the business has to make every year to keep trading, such as replacing vehicles, and any money the directors draw beyond their salaries. The result is the cash available to service debt.
Then add up debt service: a year’s repayments of capital and interest on every loan, hire purchase agreement, lease and other finance the company will have once the new loan is drawn. Divide the first figure by the second. The result is debt service cover, expressed as times.
Each lender sets the lowest cover it accepts, and it can vary that by sector, by the security on offer and by the length of the loan. The examples here use an assumed minimum of 1.25 times and an assumed interest rate of 9% a year. Neither is a market figure. Put your own lender’s figures in the debt service cover calculator.
Illustrative example
A company has profit before interest, tax, depreciation and amortisation of £210,000 and pays £30,000 of corporation tax. It already repays £60,000 a year on existing finance and asks for £150,000 over five years at an assumed rate of 9% a year.
The same arithmetic run backwards gives the largest loan. Divide the cash available by the minimum cover to find the most the company can pay in repayments each year. Take off the repayments it already makes. What is left is the room for the new loan’s repayments, and the loan that those repayments would pay off over the term at the lender’s rate is the limit.
The term moves the answer more than any other input. The same £7,000 a month repays a larger loan over seven years than over five, because each month’s payment carries less capital. A longer term costs more interest in total, so borrow over the life of what the money buys and no longer.
Illustrative example
The same company, applying to a lender that requires cover of at least 1.25 times. The minimum and the 9% rate are assumptions.
Cover is one test. A lender lending against property or equipment also limits the loan to a share of the asset’s value, which it sets itself after a valuation. An invoice finance limit depends on the invoices outstanding and on the customers who owe them. A lender can also cap its exposure to one business or one sector, and set its own maximum for an unsecured loan.
The balance sheet counts too. A company with net liabilities, or with directors' loans that could be withdrawn, has less to fall back on if trading dips. Existing charges on the Companies House register can block a new lender from taking the security it wants. Government schemes have their own limits: the Start Up Loans scheme lends up to £25,000 (at November 2026).
If the limit falls short of what you need, the levers are the same ones the lender used. Refinance expensive short-term finance onto a longer term to cut existing repayments; refinancing business debt covers how. Fund equipment through asset finance, which spreads the cost over the asset’s working life and is secured on the asset. Fund the gap between invoicing and being paid through invoice finance, which grows with sales.
Show the lender the cash the borrowing will bring in. A forecast that shows the new machine, the new site or the new contract adding to profit lets a lender look at cover after the investment as well as before it. Base it on figures you can evidence, such as signed orders or a supplier’s quote, and show what happens to cover if sales come in lower.
Your profit against all your loan repayments, new and existing, as the cover ratio a lender works out.
As much as its cash after tax supports at the lender’s minimum cover, within the value of any security and the lender’s own maximums. Divide yearly cash available by the minimum cover, take off existing repayments, and the remainder is the most the company can add in yearly repayments. The loan those repayments pay off over the term is the limit.
Some lenders of short-term unsecured loans and merchant cash advances look at monthly turnover or card takings as a starting point. Turnover does not show whether the business can afford the repayments, so a lender tests cash after costs and tax against all the company’s repayments as well. Work out your debt service cover before you rely on a turnover-based figure.
They divide the cash the business generates in a year by a year’s repayments of capital and interest on all its finance, the new loan included. One way to measure the cash is profit before interest, tax, depreciation and amortisation less tax paid. Lenders differ in what else they deduct, such as directors’ drawings above salary or spending needed to keep trading.
Security can raise the amount and lengthen the term a lender offers, because it reduces what the lender stands to lose. It does not change affordability: the business still has to meet the lender’s cover test. A lender lending against an asset limits the loan to a share of that asset’s value. Secured or unsecured.
Yes, for the same yearly repayment. In the example, £84,000 a year of repayments at an assumed 9% clears £337,214 over five years and £435,078 over seven. The longer loan costs more interest in total, and a lender will not lend for longer than the life of the asset or the purpose the money is for.
A lender reads the company's bank statements and works out whether its cash covers every loan repayment with room to spare. It then checks the trading history, the Companies House record, the credit files of the company and its directors, and what the money is for. The full answer.
A business loan is a sum your business borrows and repays with interest over a fixed term, in regular instalments. The lender prices it on the risk it reads in your accounts, your bank statements and any security you offer. Compare offers on the total you will pay in pounds, counting every fee. The full answer.
Refinancing replaces existing business debt with a new loan, at a lower rate, over a longer term or as one payment in place of several. A longer term cuts the monthly cost but can raise the total you repay, and early repayment charges on the old debt add to the bill. When the old debt is cleared, get its personal guarantees and charges formally released. The full answer.
A secured loan gives the lender a charge over an asset, such as property, equipment or everything the company owns, and that security can support a larger loan over a longer term. An unsecured loan has no charge over a named asset, and a lender can still ask a director for a personal guarantee. The full answer.
Finance is subject to status and to the lender’s terms. A personal guarantee makes you liable for the company’s debt if it does not repay, and it can be enforced against your own assets, including your home. Nothing here is a personal recommendation.
Funding searches run on Swoop’s platform. Swoop Finance Limited is a credit broker and not a lender, and is authorised and regulated by the Financial Conduct Authority (FRN 936513). Buzz Accounting Ltd introduces businesses to Swoop and may receive a fee from Swoop when funding is arranged. Business funding is separate from the financial advice Equity & General Financial Services Limited gives through this website. Finance is subject to status, and a lender may ask a director for a personal guarantee.
If a lender asks you to guarantee the company’s borrowing, our advisers can advise on life cover for that debt.