October 2026 VAT Advance Notice: If Your Sales Have Declined, Check the 1/3 Threshold First
Even if you have received a October 2026 VAT advance payment notice, you may choose to file an interim VAT return instead of paying the amount stated in the notice if your sales have fallen significantly. If your sales or VAT payable for 7–September are below 1/3 of the previous tax period's amount, or if you qualify for an early refund, you may file an interim return. Filing the return cancels the original advance payment notice. However, a slight decline in sales alone