You improve business cash flow by shortening the gap between paying for work and being paid for it. In practice that means invoicing faster, chasing harder, taking money up front where you can, paying suppliers no earlier than you must, holding less stock, pricing properly and setting tax aside as it accrues. Borrowing can smooth the timing of money in and out, but it only helps a business that generates cash in the first place. The steps below are in the order most businesses should take them.
In this guide
Start with a 13-week cash flow forecast
A 13-week cash flow forecast is a week-by-week table of the money you expect to receive and pay out over the next quarter, starting from today's bank balance. Thirteen weeks is long enough to see a VAT quarter, a payroll cycle and most customer payment runs, and short enough to be reasonably accurate.
Build it from real commitments rather than averages. List each expected customer receipt in the week it is actually likely to arrive, not the week it falls due. List payroll, rent, loan repayments, HMRC liabilities and supplier payments in the weeks they leave the account. The closing balance each week tells you whether, and when, you will run short.
Update it every week. The forecast is less a document than a habit. Once it exists, every step below can be tested against it: if you shorten customer terms by ten days, what happens to week six?
Tighten credit control
Credit control is the process of deciding who you give credit to and making sure they pay. Many small businesses are generous on the first point and passive on the second. Both cost cash.
- Run a credit check on new business customers before offering terms, and set a credit limit for each.
- Agree payment terms in writing before work starts. Thirty days is common; it is not compulsory.
- Send a polite reminder a few days before the due date, and a firmer one the day after.
- Telephone, rather than email, once an invoice is seven days late. A conversation uncovers disputes faster.
- Stop supplying customers who are significantly overdue until the account is brought back within terms.
Invoice promptly and accurately
An invoice raised a week after the job is a week of free credit. Raise invoices the day work is completed or goods are despatched. Check that each one carries the customer's purchase order number, the correct legal entity, a clear description and your bank details, because a rejected invoice restarts the payment clock.
Offer the payment methods your customers find easiest, including card and bank transfer links on the invoice itself.
Take deposits and bill in stages
If you buy materials or commit labour before you are paid, you are financing your customer. A deposit of 25 to 50 per cent on order, with staged invoices at agreed milestones and the balance on completion, moves that financing back where it belongs. This is normal in construction, manufacturing, events and bespoke services, and customers rarely object when it is set out at quotation stage.
For recurring services, consider monthly billing in advance rather than in arrears, or a retainer model. Each change of this kind reduces the working capital the business has to fund itself.
Review supplier terms
The mirror image of chasing customers is not paying suppliers early. Pay on the due date, not when the invoice arrives. Ask key suppliers for longer terms, particularly if you have a good payment record with them, and ask whether a prompt-payment discount is available where you do have spare cash. A supplier who values your account will often agree to 45 or 60 days rather than lose it.
Keep the relationship honest. Taking unapproved extra days damages trust and can cost you credit terms entirely. Agreed terms, consistently met, are worth more than a few days gained by stealth.
Hold less stock
Stock is cash sitting on a shelf. Review slow-moving lines and sell them off, even at a reduced margin, to turn them back into money. Reorder in smaller quantities more often, and ask suppliers about consignment or sale-or-return arrangements for expensive lines. Work in progress deserves the same scrutiny: half-finished jobs that cannot be invoiced tie up labour and materials.
Check your pricing
Chronic cash shortages are sometimes a pricing problem in disguise. If prices have not moved while wages, energy and materials have, margins shrink and every job contributes less cash. Review prices at least annually, and review them now if costs have risen sharply. Losing a small number of price-sensitive customers is usually less damaging than serving all of them at a loss.
Set aside VAT and PAYE as you go
VAT collected on sales and PAYE deducted from wages are not your money. Treating them as working capital is one of the most common routes into serious difficulty, because the liability arrives in a lump on a fixed date. Open a separate account and transfer the VAT element of each receipt and the PAYE element of each payroll as they occur. The main account then shows the cash you can actually spend.
If a tax bill is already unaffordable, HMRC's Time to Pay arrangements may allow it to be spread. Interest continues to accrue, and it is better to contact HMRC before the due date than after. Our page on HMRC tax debt explains the process.
When finance is the right complement
Once the operational steps are in hand, the forecast may still show a timing gap: a profitable business that simply waits too long between paying for work and being paid. This is where finance can help rather than hinder.
- Invoice finance releases most of the value of unpaid invoices within days of raising them, so growth in sales no longer starves the business of cash.
- Cash flow finance provides a facility sized to a known, temporary gap, such as a seasonal dip or a large contract that needs funding before it pays.
- Working capital finance suits a business that needs a modest, flexible buffer rather than a lump sum.
In each case the finance has a cost, usually fees as well as interest, and may require a personal guarantee or security. Test the repayments in the 13-week forecast before committing, and compare offers on total cost rather than headline rate. Our guide on comparing business finance offers shows how.
When finance masks a problem
If the forecast shows cash running out every month, not just in a predictable dip, the business is not generating enough cash to cover its costs. Borrowing to bridge that gap adds a repayment to a budget that already does not balance, and the shortfall returns larger. The same is true of using new credit to pay HMRC arrears or existing loan instalments. In that situation the priorities are pricing, costs and creditor conversations, and free impartial help from Business Debtline is available. Our page on business cash flow problems covers the warning signs.
How to tell the difference
Ask three questions. Is the business profitable on paper once all costs, including the owner's drawings, are included? Does the forecast show cash recovering within a quarter if receipts arrive on time? Would the finance be used to fund growth or timing, rather than to pay for last month? Three yeses point to a timing gap that finance can reasonably bridge. A no to any of them suggests the operational work above comes first, and that an honest conversation with existing creditors may be more useful than a new facility. If you would like to talk through which applies to your business, get in touch and we can explain the options.
Key takeaways
- A 13-week cash flow forecast, updated weekly, is the foundation for every other decision.
- Faster invoicing, firmer credit control, deposits and staged billing shorten the gap between spending and being paid.
- Pay suppliers on time but not early, hold less stock and review prices against current costs.
- Ring-fence VAT and PAYE as they accrue; they are the liabilities most likely to cause a crisis.
- Finance such as invoice finance or cash flow finance suits a profitable business with a timing gap, not a business that is losing money each month.