After the 2026 Bill: A Business Rates Audit for SME Occupiers

The 2026 rating revaluation took effect on 1 April 2026. By early November, most SME occupiers in England will have received their 2026-27 business rates bill and paid at least one instalment. The immediate question is rarely whether the revaluation was fair in principle. It is whether the bill in front of you accurately reflects the property you occupy, the reliefs you are entitled to and the transitional arrangements that apply.

A post-bill audit is not an appeal. It is a structured check of the assessment, the bill and the evidence behind them. Done properly, it can be completed in an afternoon and will either confirm that the bill is correct or give you a clear basis for a query, a challenge or a budget adjustment. Wales and Scotland operate separate rating systems, so deadlines and reliefs differ, but the audit discipline below applies in principle across the UK.

Start with the bill and the list entry

Put the rates bill beside the Valuation Office Agency list entry for the property. Check the address, the description of the hereditament, the rateable value, the effective date and the multiplier applied. Confirm whether the bill covers the whole property or only part, and whether any prior-year adjustments have been carried forward.

Check the instalment schedule against your cash forecast. A bill can be correct in total but still cause a cash problem if the instalments are front-loaded or if a relief has been applied later than expected. Note the billing authority reference, the date of the bill and any explanatory leaflet accompanying it.

Verify the facts behind the rateable value

The 2026 rateable value is based on a valuation date of 1 April 2024. That matters. The assessment should reflect the property as it stood then, not the fit-out you completed last summer. Check the floor areas used, the division between sales and storage space, the treatment of mezzanines, parking, yards, outbuildings and plant, and the stated use of the property.

Take your lease plan and, if available, a measured survey. Walk the property with a clipboard and compare gross internal area, net internal area and any areas that may have been double-counted. Photograph dated areas of difference. If the list entry describes the property in a way that no longer matches occupation, record why and when the change occurred.

Check reliefs, multipliers and transition

Confirm which multiplier has been applied. Small business rates relief, charitable relief, empty property relief and improvement relief each have conditions and caps. Check whether relief has been backdated correctly and whether it survives a change of occupier or a change in use.

Transitional relief is the item most often misunderstood. The scheme smooths large increases and decreases over several years, but it does not simply cap the whole bill. Check the scheme rules for your part of the UK, the percentage increase applied in 2026-27 and whether your property qualifies. If the bill shows a transitional adjustment, ask the billing authority to explain the calculation in writing.

Spot the common errors

Errors usually fall into a small number of categories:

• Areas included twice, or measured on a different basis from the lease plan.
• Parking, yard or storage space assessed although it is not in the occupier's control.
• The property description referring to uses or works that were not in place on 1 April 2024.
• Reliefs omitted because a previous occupier's account was used.
• Multipliers applied to the wrong rateable value band.
• Instalments calculated before a relief or transition adjustment was processed.

Not every discrepancy justifies a challenge. A small difference in floor area may not change the rateable value enough to merit the time. Focus on facts that are material, evidenced and capable of changing the assessment.

Build a short evidence pack

Before contacting anyone, assemble a single folder containing the rates bill, the list entry, the lease and any plans, dated photographs, a measured survey if you have one, records of occupancy and use, evidence supporting relief claims, and a short chronology of correspondence. Keep the pack factual. Do not include argument until the facts are agreed.

In England, the Check, Challenge, Appeal process starts with checking the list entry. A challenge should be evidence-led and specific. Do not withhold payment while a query is open unless the billing authority has confirmed a revised bill or a relief in writing. Unpaid rates can attract recovery action even where a challenge is underway.

The afternoon checklist

1. Match the bill to the list entry and confirm the property description.
2. Reconcile floor areas to the lease plan and a site walk.
3. Check the valuation date and whether post-1 April 2024 works have been included.
4. Confirm multipliers, reliefs and transitional adjustments.
5. Compare the instalment schedule with the cash forecast.
6. Record any discrepancy with evidence and a materiality judgement.
7. Decide whether to pay, query the billing authority, check the list entry or seek professional advice.
8. Diarise the next review before the next instalment or relief deadline.

For owner-managers, the final step is governance. Give one director responsibility for the rates file, record the audit conclusion in the monthly board pack and note any challenge or relief deadline in the compliance calendar. A rates bill is a property cost and a cash item. Treating it as both makes the next revaluation easier to manage.