Budget vs Forecast: Stop Moving the Goalposts

The sales target is missed. Someone updates the spreadsheet. At the next meeting, the business is suddenly close to plan again.

There may be a sensible new forecast behind that change. But unless the original target survives, the team has lost the ability to distinguish better information from better performance.

Keep the promise and the prediction separate. A budget is a commitment to a plan; a forecast is your current estimate of what will happen.

Give each number a job

The Australian Government's budgeting guide distinguishes a budget's planned income and spending from a forecast informed by current financial data and trends. That distinction is useful in the management meeting, not just the accounting vocabulary.

Use the approved budget to discuss priorities and accountability. Use the current forecast to decide what needs to change now. Use actual results to test whether either view was realistic. None of the three should silently replace the others.

There can be legitimate reasons to approve a revised budget: a material acquisition, a changed operating model or a board decision. Label that version explicitly and retain the original. Otherwise, a reasonable replan can make the historical comparison impossible to explain.

A revenue bridge that exposes the real issue

Illustrative example. A business budgets A$1.2 million of revenue for a calendar year, evenly across four quarters. First-quarter actual revenue is A$270,000 rather than A$300,000. Based on signed work and revised demand, the team now expects A$810,000 over the remaining nine months.

Illustrative full-year revenue bridge — A$000

Component	Approved budget	Actual or latest estimate	Difference
First three months	300	270	−30
Remaining nine months	900	810	−90
Full year	1,200	1,080	−120

The full-year forecast is A$1.08 million: actual revenue already earned plus the estimate for the months still ahead. The A$120,000 gap has two parts: A$30,000 has already occurred and A$90,000 relates to the remaining year.

That changes the conversation. Catching up the first quarter is not the whole task. The current view also says the rest of the year will be weaker than planned. The team needs to test the assumptions behind that second number.

Do not add the first-quarter shortfall again after calculating the full-year forecast. It is already included in the A$270,000 of actuals. Double-counting the disappointment creates an equally misleading result.

Explain changes in business language

For each material movement, identify whether the cause is volume, price, mix, timing or a genuine one-off. “Revenue down ten per cent” describes the result but does not tell the person responsible what to do.

A better note might be: “Two project starts moved from May to July; total contract value is unchanged, but this year's delivery revenue is lower.” Another could be: “Renewal pricing is below the approved assumption; the change reduces every remaining month.” These are different problems with different remedies.

Give every important assumption an owner, evidence date and next review date. The owner need not be the person maintaining the spreadsheet. Sales may own contract timing while operations owns delivery capacity and finance owns the collection assumption.

Do not confuse a revenue fix with a cash fix

An extra sale does not necessarily fund next week's payments. The work may need to be delivered before it can be invoiced, and the invoice may be collected later still. Keep the revised profit outlook connected to receivables and cash.

Our three-way forecasting guide shows how one assumption should flow through all three statements. Use the 13-week cash view to test near-term payment dates rather than spreading an annual revenue adjustment evenly across the bank forecast.

Use a repeatable monthly decision

At each review, preserve the previously approved forecast, load the new actual period and update only the future assumptions that changed. Compare the new outlook with both the budget and the previous forecast.

Then record one decision against each important gap. It might be a revised hiring date, a customer discussion or a smaller discretionary project. State the expected effect, decision owner and date to check the result. An action without a quantified assumption cannot be meaningfully tested next month.

What to put on the first page

Show the approved budget, actuals to date, latest full-year forecast and movement since the previous forecast. Follow with the three assumptions responsible for the largest changes. Keep the supporting schedules available rather than filling the opening page with every account.

The aim is not to defend the budget or excuse the forecast. It is to preserve accountability while giving the business an honest view of the road ahead.

Explore MagicHub and our approach to connecting business plans with the numbers behind them.

General business education only, not accounting, tax, legal or financial advice. Worked examples are fictional and simplified, not customer results or industry benchmarks. Confirm the assumptions and obligations that apply to your business with your adviser.