Oct 7
The Bank of England held Bank Rate at 3.75% in its September decision, published on 17 September 2026, but three of the nine Monetary Policy Committee members voted to raise it to 4%. How interest rates affect business borrowing comes down to how your debt is priced. Variable loans, overdrafts and many invoice finance lines can move with Bank Rate quickly, while fixed-rate borrowing is protected only until the fixed period ends. The next decision is on 5 November 2026, so now is a sensible time to find out which of your facilities would move and by how much.
None of this means a rise is certain. It does mean the assumption that the next move is a cut has weakened, and that is worth building into your interest rate and cash flow reforecast before lenders or the markets make the decision for you.
The Bank of England’s September summary shows a 6 to 3 vote to hold. Megan Greene, Catherine L Mann and Huw Pill voted for a 0.25 percentage point increase. The Committee pointed to higher crude and refined energy prices linked to conflict in the Middle East, and said the risks to inflation were tilted to the upside.
CPI inflation was 3.1% in August. The Bank expected it to rise to around 3¾% in the final quarter of 2026 and to slightly above 4% in the first quarter of 2027. The Committee also said there was little evidence so far of material second-round effects, which is the bit that would push it closer to raising rates. In plain terms, the Bank is watching whether energy costs feed into wages, prices and expectations.
You do not need to predict the outcome. You need to know what happens to your finances if Bank Rate is 4% or higher by Christmas, and whether you could cope with it.
Direct answer: when Bank Rate rises, lenders usually increase the interest on variable-rate loans, overdrafts and some invoice finance facilities, so your monthly cost goes up. Fixed-rate loans do not change during the fixed period. Higher rates can also tighten lending criteria, raise the cost of refinancing and put pressure on customers who owe you money.
Not every product reacts in the same way, and the difference matters more than the headline rate. The table below sets out how common types of business finance behave.
| Type of finance | Reaction to a Bank Rate rise | What to check |
|---|---|---|
| Tracker or variable-rate loan | Rate usually rises soon after the announcement | Margin over Bank Rate and repayment impact |
| Overdraft | Rate usually rises with Bank Rate | Facility review date and any fees |
| Fixed-rate loan | No change during the fixed term | Date the fixed period ends and the rate that follows |
| Invoice finance | Discount charge is often linked to base rate or another reference rate | How the charge is calculated and on what balance |
| Asset finance and hire purchase | Often fixed at the start of the agreement | Whether any new agreements are priced at today’s rates |
| Revolving credit facility | Usually variable | Covenants and renewal terms |
Lloyds Bank says variable-rate loans and overdrafts change in line with Bank Rate, while fixed rates are unaffected during the agreed period. Always check your own agreement, because the wording on margins, reference rates and review rights varies from lender to lender.
A quarter point sounds small. On a larger balance it adds up, especially if rates keep moving. The figures below show the extra annual interest on a balance that tracks Bank Rate, before any tax relief.
| Balance on a variable rate | Rise of 0.25 points | Rise of 0.5 points | Rise of 1 point |
|---|---|---|---|
| £50,000 | £125 | £250 | £500 |
| £250,000 | £625 | £1,250 | £2,500 |
| £500,000 | £1,250 | £2,500 | £5,000 |
On a £250,000 tracker loan, a move from 3.75% to 4% adds £625 a year, which is about £52 a month. That may be manageable on its own. The problem usually comes from several facilities moving at once, on top of higher energy bills, wage costs and slower customer payments.
Interest on business borrowing is generally deductible against taxable profits, subject to the usual tax rules. That softens the blow slightly. It does not remove the cash flow effect, and cash is what you pay interest with.
There is no right answer for every business. Fixing gives you certainty, but you often pay for it, and an early repayment charge can make it expensive to exit. Staying variable keeps flexibility, but leaves you exposed if the Committee moves in November or later.
We often see business owners check the headline rate on a facility and miss the margin, the review date and the exit terms. Those three things usually matter more than the quarter point.
A few questions help you decide.
If you are weighing up new funding, our guide to SME lending and funding for growth covers the main options in more detail.
Interest rates affect more than the debt on your balance sheet. Several other costs can move with them.
HMRC charges late payment interest at Bank Rate plus 4%, which currently works out at 7.75%, as shown on the GOV.UK page for HMRC interest rates. That makes an unpaid tax bill one of the most expensive forms of borrowing, and it rises whenever Bank Rate rises. If you are behind, our guide to dealing with HMRC tax debt explains the options, and it helps to understand how VAT and PAYE direct debits affect cash flow so a payment does not catch you out.
The same logic applies to your customers. If they borrow on variable terms, their costs rise and they may pay you later. Statutory interest on late commercial payments is 8% above the relevant reference rate, according to GOV.UK guidance on charging interest on commercial debt, but few businesses want to use it on a good customer. A practical approach to chasing is covered in our piece on late payments and SME cash flow.
Finally, higher borrowing costs often arrive alongside higher input costs. Contractors in particular feel this, and we have written about how to protect margins against construction cost inflation.
You do not need a big restructuring exercise. A few straightforward checks put you in a much better position, whichever way the Committee votes.
If cash is already tight, specialist help can free up working capital without new borrowing. Our article on how recovery accountants improve cash flow explains what that involves.
Cross-border businesses deal with two central banks. The European Central Bank’s deposit facility rate is 2.50%, noticeably lower than Bank Rate, so borrowing in euros through an Irish entity can look cheaper on paper.
The comparison is rarely that simple. Currency movements, lender margins, security requirements and where the cash is actually earned all affect the true cost. A cheaper euro loan can become more expensive if sterling weakens against the euro and your income is in pounds.
Our guide to keeping sterling and euro books for cross-border SMEs covers how to track this, and the notes on setting up a company in both the UK and Ireland explain how group structures affect where debt sits.
If you operate on both sides of the border, specialist cross-border accounting and tax advice helps you compare the real cost of funding in each jurisdiction, including the tax treatment of interest.
For most businesses, a rate rise is an irritation. For a business already stretched, it can be the point where debt service stops being affordable.
The warning signs tend to show up in a familiar order. Overdraft usage creeps up, supplier payments slip, tax payments are delayed and you start borrowing to cover the previous month. Our guide to financial distress warning signs sets out what to look for, and recent figures on company failures and personal insolvencies show why acting early matters.
If you are a director and the business may not be able to pay its debts as they fall due, your duties change. Read up on director duties during insolvency and take advice promptly. A company voluntary arrangement can sometimes spread debts over time while the business keeps trading, and our comparison of CVA, administration and liquidation explains how the routes differ. A licensed insolvency practitioner can tell you which, if any, fits your circumstances.
Lenders also want reassurance. Where facilities are secured or covenants apply, an external audit or reliable reviewed accounts can strengthen your position at renewal.
Yes, if the loan is on a variable or tracker rate. The rate usually moves soon after a Bank Rate change. A fixed-rate loan keeps the same rate for the agreed term and only becomes exposed when that term ends.
Most business overdrafts are priced as Bank Rate, or another reference rate, plus a margin, so a rise increases the cost on the amount you actually use. The facility may also be reviewed at renewal, and a lender could change the limit or terms if your risk profile has shifted.
It depends on how much uncertainty your cash flow can absorb and how much you would pay to fix. Compare the fixed quote with the cost of a one point rise, check the early repayment charges, and consider fixing only part of the borrowing if you want to keep some flexibility.
Not directly, but HMRC late payment interest is linked to Bank Rate, so unpaid tax becomes more expensive when rates rise. Interest on business borrowing is generally an allowable expense, which reduces the profit you pay tax on, but it still has to be funded in cash.
If you want to know how a change in Bank Rate would affect your borrowing, cash flow and tax position, the team at SCC can model the scenarios with you. As chartered accountants in Northern Ireland and Ireland, we work with owner-managed businesses on both sides of the border. Get in touch to arrange a conversation before the Bank of England meets again on 5 November.
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