Cash flow forecasting: outsource the model, keep the calls

Key takeaways

Cash flow forecasting outsourcing splits neatly: a provider keeps the model current each week, updating actuals, debtor and creditor timing and known commitments, and the owner makes the calls about what to do. A 13-week rolling forecast, updated weekly, is the format most SMEs find useful. The assumptions belong to you.

• Provider: weekly actuals, timing updates and the model.
• Owner: assumptions, decisions and actions.
• Use a 13-week rolling forecast, updated weekly.
• Compare forecast with actual every week.

What is a 13-week rolling cash flow forecast?

It is a week-by-week view of cash in and cash out for the next 13 weeks, rolled forward each week so it always looks one quarter ahead. Thirteen weeks is long enough to see a squeeze coming and short enough to be reasonably accurate. It sits beside the annual budget, not instead of it.

• Which business processes should you outsource?
• Outsourcing and cash flow: fixed costs to variable

Which parts of forecasting can be outsourced?

The maintenance. Each week the provider replaces last week's forecast with actuals from the bank, updates expected receipts from the debtor ledger, adds known payments such as payroll, VAT and supplier runs, and notes the biggest differences between forecast and actual. This is steady, rule-based work that often slips when the owner does it alone.

• Cash allocation: match customer payments to invoices daily
• Supplier payment runs: outsource the prep, keep approval

What must the owner decide?

The assumptions and the actions. Which customers will pay late, whether a big order will land, when to hire or invest, whether to chase harder or draw on a facility. A provider can model the effect of each choice; the choice itself carries the business's risk and stays with you.

• Budgeting: the process stays yours, the admin can move
• Management accounts: outsource the pack, keep the review

When should forecasting stay fully in-house?

When cash is so tight that daily decisions depend on it, keep it close and consider your accountant's direct help. Also when the business has very few transactions: a simple spreadsheet the owner updates monthly may be enough, and outsourcing it adds handoffs for little gain.

• How much volume makes a process worth outsourcing?
• Outsource, split, fix or keep: four process verdicts

What does this look like in practice?

A pattern we see: forecasts that the owner maintains alone are accurate in January and abandoned by April. A weekly update someone else is responsible for keeps the forecast alive, and the owner's review becomes a 20-minute habit.

• See client work
• BPO Solutions for UK businesses

Cash forecasting checklist

Set these up before handing over the updates.

• Agree the 13-week format and categories.
• List recurring payments and their dates.
• Link expected receipts to the debtor ledger.
• Set a weekly update day.
• Review forecast against actual each week.
• Record assumptions the owner sets.

• Finance processes to outsource, and the ones to keep
• How to reduce debtor days and the cost of waiting for cash

Next step

Tell us how you track cash today. We will suggest a forecast format and explain what the weekly update would involve.