How to Calculate Irish VAT Online (2026 Guide)
Step-by-step method for Irish VAT in 2026: 23% / 13.5% / 9% rates, net-to-gross conversion, registration thresholds, and bi-monthly set-aside — then open the free live tool for the maths.
Calculating Irish VAT means applying Revenue’s rates correctly — 23% standard plus 13.5%, 9%, and other categories — converting net of VAT to gross, and estimating what to set aside each bi-monthly period. You do not need a desktop install; a browser tool can do the maths once you understand the rules.
This guide walks through the calculation steps and registration thresholds (€85,000 goods / €42,500 services). For live rate maths on Ireland and the UK, use FinnAccountings’ free VAT calculator — this article explains the method; the tool page is the live calculator.
How Irish VAT calculation works
Enter a net (ex-VAT) amount and multiply by the Irish rate to get output VAT, or enter a gross (inc-VAT) amount and divide by 1.23 at the standard rate to extract the net. Add purchases to estimate reclaimable input VAT so you know what to set aside each bi-monthly period.
On the free VAT calculator, leave the region on Ireland, pick the rate that matches most of your sales, and toggle Ex-VAT or Inc-VAT. Results update instantly — useful for invoices, supplier bills, and hospitality quotes still on the temporary 9% rate.
Irish VAT rates to select in 2026
Most goods and services use the 23% standard rate. Reduced rates include 13.5% (for example fuel and certain building services), 9% (hospitality and newspapers where applicable), 4.8% livestock, and 0% for exports and qualifying zero-rated supplies. Always confirm unusual supplies with Revenue before filing.
If you sell across rates, calculate each line at the correct percentage rather than averaging. The calculator’s rate selector is designed for single-rate estimates; mixed invoices should be broken out by rate in your books.
Net of VAT vs gross — and set-aside checks
Net of VAT means the price before VAT; gross includes VAT. At 23%, €100 net becomes €123 gross; €123 gross divided by 1.23 returns €100 net. Run both conversions in the free online tool without installing software.
For return prep beyond rate maths — transaction reconciliation and ROS filing packs — see VAT Services Ireland. Pair VAT set-aside with income tax estimates using the free tax calculator for Ireland and the UK.
Registration thresholds and next steps
Irish businesses must register when rolling 12-month turnover exceeds €85,000 for goods (or €42,500 for services-only). Voluntary registration below the threshold can make sense when you reclaim significant input VAT. Once registered, most traders file bi-monthly returns with Revenue.
Stress-test turnover against thresholds on the free VAT calculator, then start a free trial if you want FinnAccountings to organise bookkeeping and VAT prep drafts with Chartered Accountant insight before you or your Chartered Accountant (Ireland) adviser signs off filings.
Related FinnAccountings resources
Use the free VAT calculator for live rate maths, VAT Services Ireland for return workflows, and the tax calculator when you need USC and PRSI estimates beside VAT. Hospitality traders on the temporary 9% rate should also read our July 2026 hospitality VAT update.
Sources & references
This article draws on official guidance from the sources below.
- VAT rates
Revenue Commissioners · Accessed 2026-07-28 - VAT registration thresholds
Revenue Commissioners · Accessed 2026-07-28 - Registering for VAT
Revenue Commissioners · Accessed 2026-07-28
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