The HM Revenue & Customs has announced planned downtimes for the 'Report and pay Capital Gains Tax on UK property' service, with the latest update indicating downtime from 8am on Saturday 11 July 2026 to 3:30pm on Sunday 12 July 2026.
Key takeaway
HMRC schedules 31.5-hour CGT property service downtime (11-12 July 2026).
- Step 1 · The triggerHMRC schedules 31.5-hour CGT property service downtime (11-12 July 2026).
- Step 2 · Knock-onProperty completions closing during that window cannot file CGT returns until service resumes, creating a filing backlog.
- Step 3 · Reaches youConveyancing and tax advisory SMEs face compressed filing windows and increased client queries, raising operational costs.
The trigger is reported by the source below. The steps that follow are Branch²’s traced reasoning — how the shock could reach a business like yours, not a prediction.
Source: HM Revenue & Customs
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