Two Days to 31 August: Ireland VAT IOSS July Return
As of 29 August 2026, Irish IOSS registrants have two days — this weekend — to file and pay the July 2026 Import One Stop Shop VAT return by Monday 31 August — nil returns still required, and IOSS does not replace domestic VAT 3.
Revenue’s Calendar of key dates for tax professionals lists 31 August 2026 for the VAT IOSS monthly return and payment for July 2026. As of Saturday 29 August, Irish Import One Stop Shop (IOSS) registrants and intermediaries have two calendar days — Saturday and Sunday — before Monday’s month-end close.
IOSS lets suppliers account for EU VAT on low-value imported consignments (intrinsic value not exceeding €150) through a monthly return to the Member State of identification instead of paying import VAT to Customs at the border. Revenue’s IOSS Tax and Duty Manual confirms the return must be filed electronically by the end of the month following the tax period, whether or not any supplies were made.
Who must file by Monday 31 August
IOSS-registered suppliers identified in Ireland, and intermediaries acting for non-EU suppliers, must file the July 2026 monthly return and pay any VAT due by 31 August 2026.
Nil returns are mandatory when you made no IOSS supplies in the period. Missing a nil return can still trigger reminders and compliance contact — treat blank months as filing events, not quiet months.
IOSS does not replace your domestic VAT 3 obligations. Traders with both Irish VAT and IOSS registrations keep both diaries separate after the 19 August VAT 3 date and into the 19 September bi-monthly window.
Two-day weekend prep checklist
Reconcile July low-value consignments and marketplace reports to your IOSS ledger today — do not leave first bank payment attempts for Monday morning when ROS and banking queues build.
Confirm ROS or MyEnquiries access for the IOSS return path before Sunday evening coverage thins — a locked certificate on Monday is a self-inflicted miss.
If you use an intermediary, confirm who files and who pays before close of business Sunday — split responsibility is the most common final-weekend failure mode.
Diary the August IOSS period (due 30 September) so July close-out does not create a backlog into autumn September PAYE and VAT prep.
How FinnAccountings helps with IOSS and domestic VAT packs
Organised sales channels make IOSS and VAT 3 packs easier to review side by side. FinnAccountings helps Ireland and UK businesses prepare bookkeeping and VAT packs with Chartered Accountant insight before you or your Chartered Accountant (Ireland) or ICAEW/ACCA adviser files. Start a free trial for review-ready drafts — we prepare records; we do not file IOSS or ROS returns on your behalf.
Related reading
Yesterday’s three-day IOSS briefing still maps scheme context and nil-return rules.
Keep the weekend ROS sequence beside this IOSS close-out.
Bi-monthly July–August domestic VAT filers should keep 19 September on the radar.
For dual-market VAT estimates while you prep packs, use the free calculator.
Sources & references
This article draws on official guidance from the sources below.
- Calendar of key dates for tax professionals
Revenue (Irish Tax and Customs) · Accessed 2026-08-29 - Import One Stop Shop (IOSS) — Tax and Duty Manual
Revenue (Irish Tax and Customs) · Accessed 2026-08-29 - When VAT becomes payable
Revenue (Irish Tax and Customs) · Accessed 2026-08-29
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