Staying current with هيئة الزكاة والضريبة والجمارك (ZATCA) requires more than just paying the right rate. The filing calendar, the frequency rules, and a handful of avoidable errors determine whether a routine compliance task quietly protects your business or quietly drains it.
Who Files Monthly, Who Files Quarterly
The threshold that determines your filing frequency is straightforward: if your annual taxable supplies exceed SAR 40 million, you must file a VAT return every month. Below that figure, quarterly filing is your default. You may, however, voluntarily elect monthly filing regardless of your revenue level — a choice that can help businesses with consistent input VAT credits recover cash faster.
The registration thresholds are separate:
- Mandatory registration: annual taxable turnover above SAR 375,000
- Voluntary registration: annual taxable turnover between SAR 187,500 and SAR 375,000
- Below SAR 187,500: no registration required
If you are close to any of these thresholds, monitor your trailing 12-month revenue carefully. Crossing the mandatory line without registering carries a fine of up to SAR 10,000.
The Deadline Rule: Last Day of the Following Month
Both monthly and quarterly filers follow the same timing principle: submit and pay by the last day of the month that follows your tax period. In practice:
| Period | Deadline |
|---|---|
| January (monthly) | 28/29 February |
| Q1: January–March (quarterly) | 30 April |
| April (monthly) | 31 May |
| Q2: April–June (quarterly) | 31 July |
ZATCA has confirmed this pattern in its public announcements, including its April 2026 filing deadline notice, which set 30 April 2026 as the due date for both the March monthly return and the Q1 quarterly return.
Missing the deadline triggers penalties immediately — there is no grace period built into the system.
The Penalty Structure
Understanding the cost of non-compliance is the clearest motivation to build a proper filing calendar.
| Violation | Penalty |
|---|---|
| Late VAT return filing | 5% to 25% of tax due |
| Late VAT payment | 5% of unpaid tax per month (or part month) |
| Incorrect VAT return | Up to 50% of undeclared tax |
| Failure to register | Up to SAR 10,000 |
| Failure to maintain records | Separate fine applies |
Sources: ZATCA VAT Implementing Regulations, Analytix.sa penalty guide
Note: a tax amnesty initiative was in effect until 30 June 2026 allowing settlement of historic penalties on principal tax payment. Check ZATCA's current announcements for any extensions.
Five Mistakes That Cost Businesses Money
1. Claiming input VAT on ineligible expenses
Not every business expense carries a recoverable VAT component. Purchases of personal nature, entertainment costs without a direct business link, and expenses without a valid tax invoice are commonly rejected during audits. The rule: if there is no compliant tax invoice with the supplier's VAT registration number, the input claim does not stand.
2. Missing the mandatory fields on tax invoices
A rejected invoice means a rejected input VAT claim. ZATCA-compliant invoices require the supplier's name, address, and VAT number; the buyer's information for B2B invoices; an itemized description; the tax amount; and, since Phase 1 of the Fatoorah mandate, a QR code. Businesses now subject to Phase 2 must also transmit invoices to ZATCA's Fatoorah platform in near-real time.
3. Failing to apportion input VAT on mixed-use expenses
Businesses with both taxable and exempt supplies can only recover the proportion of input VAT that relates to taxable activity. Claiming the full amount is a common audit finding and triggers the incorrect-return penalty.
4. Missing filing deadlines because the period-end falls on a weekend or holiday
ZATCA adjusts deadlines when the last filing day falls on a weekend or public holiday, but that adjustment is not always obvious. Businesses that assume the next working day is safe have been penalized. Set calendar reminders 10 days before every deadline, not the day before.
5. Inadequate record keeping
ZATCA requires businesses to retain VAT records for six years. This includes purchase invoices, sales invoices, contracts, and supporting documents for zero-rated supplies and input VAT claims. Failing to produce records during an audit is itself a penalizable event, independent of whether the underlying returns were correct.
Practical Prevention
- Lock a filing calendar into your accounting system at the start of each fiscal year with reminders set 14 days before each deadline.
- Reconcile your VAT return to your trial balance before submission, not after.
- Maintain a separate schedule for tracking which suppliers are VAT-registered, so input claims are never filed without verification.
- Review your annualized taxable supply figure each quarter; if you are approaching SAR 40 million, begin monthly filing processes before you cross the threshold.
- Keep digital copies of every tax invoice in the format ZATCA accepts, matched to the relevant return period.
Compliance with VAT filing requirements is procedural, not complicated. The businesses that pay penalties almost always do so because of calendar failures and record gaps, not because of genuine disputes about the tax itself.
آكد Advisory offers a free Finance Health Check to identify filing gaps, input VAT leakage, and process weaknesses before they become penalties. Request yours today.