Quick Answer
To handle mid-year budget adjustments, first determine if the change is material enough to warrant a formal adjustment versus being captured in your reforecast. For material changes, document the business case, quantify the P&L and cash impact, get approval from the appropriate authority, and update the budget baseline. Keep the original budget for year-end variance analysis while using the adjusted version for operational management.
Not every deviation from budget requires a formal adjustment. Your reforecast captures updated expectations without changing the approved budget baseline. Reserve formal budget adjustments for material, structural changes:
A reforecast updates your expected outturn without changing the approved budget. Use it for normal business fluctuations — revenue coming in slightly above or below plan, timing differences in hiring, cost variances within reasonable range.
A budget adjustment formally changes the approved baseline. It resets what you are measured against and requires the same level of approval as the original budget (typically board-level for material changes).
1. Document the trigger. What has changed and why? Is it temporary or permanent? Does it affect the current year only or future years as well?
2. Quantify the impact. Calculate the full P&L, cash flow, and balance sheet impact. Show the original budget, proposed adjustment, and revised budget side by side.
3. Propose offsets. If possible, identify cost savings or revenue opportunities that partially offset the adjustment. Leadership appreciates seeing the full picture rather than just the additional cost.
4. Get approval. Follow your approval matrix — minor adjustments approved by CFO, material adjustments approved by the board. Document the approval.
5. Update the model. Create an adjusted budget version in your planning system. Keep the original budget as a separate version for year-end variance reporting.
It is critical to maintain the original approved budget alongside any adjusted version. At year-end, you should be able to explain performance against both: "We were £500K below the original budget, and £200K below the adjusted budget." This provides full transparency on planning accuracy.
For UK-listed companies, material budget adjustments may need to be reflected in market guidance updates. For PE-backed companies, budget adjustments often require investor board approval. For private companies, the governance structure determines the approval authority.
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FAQ
Formal budget adjustments should be rare — ideally no more than once or twice per year for truly material changes. If you are adjusting the budget every month, you have a planning accuracy problem that adjustment won't solve. Use reforecasts for regular updates.
Generally, no. Being ahead of budget is good news that your variance analysis should capture positively. Raising the budget baseline mid-year makes it harder to beat and can reduce motivation. Keep the original budget and let the positive variance speak for itself.
Be transparent about what changed, why, and what it means for each department. If the adjustment involves cost reductions, explain the business rationale clearly. If it involves increased investment, explain the opportunity. People accept changes better when they understand the reasoning.
A supplementary budget is a formal request for additional funding beyond the approved budget, typically used in government and public sector contexts. In the private sector, the equivalent is a budget adjustment or budget revision.
Grove FP lets you maintain multiple budget versions — original approved, adjusted, and current forecast. Compare any two versions side by side with automatic variance calculations. Full version history provides the audit trail for governance.
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