How much should I borrow for my business?

2 min read

To your needNot to the limit

Small bufferFor genuine uncertainty

Interest on what you takeOver-borrowing costs

Size then compareTotal repayable at that sum

Start from the need, not the offer

The right loan size begins with the specific job the money must do: buy this equipment, cover this VAT bill, fund this stock order, bridge this gap. Cost it properly, then borrow that. A lender may offer more than you asked for, but a bigger limit is not a target — interest is charged on what you draw, so every pound borrowed beyond the need is a pound of cost with no return.

Sizing the buffer

A modest buffer above the bare need can be sensible where the cost is genuinely uncertain — a build that might overrun, an order that might grow. But there is a line between a prudent buffer and borrowing 'while it's available'. Keep the buffer proportionate to the real uncertainty, not to the size of the offer. Work out the underlying need on the affordability calculator first.

Then check affordability and compare

Once you have a figure, test it two ways. Can the monthly payment be comfortably serviced from cash flow? See affordability. And what does that amount cost across lenders on total repayable? A well-sized loan that is affordable and keenly priced beats a large one that strains cash flow. See also does a bigger loan get a lower rate.

When you have your number, apply for that amount — not more.

Frequently asked questions

Should I borrow extra in case I need it later?

Rarely worth it. Interest runs on what you draw, so borrowing a large sum 'just in case' costs real money while it sits idle. If your need is genuinely uncertain, a modest buffer or a revolving facility you draw only when required serves better than a big lump-sum loan. Size to the real need and keep flexibility for the uncertainty.

Is it cheaper to take one bigger loan or two smaller ones?

It depends on timing and rates. One loan avoids paying two sets of set-up fees, and bigger facilities can attract a slightly lower rate. But if you do not need the second tranche for months, borrowing it now means paying interest on money you are not using. Match the borrowing to when you actually need each part.