Most RETT compliance failures are not about disputing the 5% rate. They are about what happens after the transaction closes — a value ZATCA does not accept, a deadline that passed unnoticed, or a transferee who assumed the transferor’s obligation was not their problem. The Implementing Regulations give ZATCA specific, bounded powers to reopen a transaction, assess it, and collect what is owed, and they give the taxpayer specific, bounded windows to object, correct, or come forward first.
This article maps those powers and those windows — who can be assessed, when ZATCA can reopen a deal, who is liable if the tax goes unpaid, and what routes exist to fix a problem before ZATCA finds it.
The Implementing Regulations set out how ZATCA assesses, collects, and enforces RETT — the mechanics covered in this article. They do not restate the full fine schedule in Article 15 of the RETT Law itself; they only cross-reference it. The one rate the Regulations confirm directly, via their transitional provision in Article 14, is a 2% fine of the unpaid tax for each month or part of a month of delay. For the complete current fine table and any caps that apply outside the transitional period covered by Article 14, confirm against the RETT Law text or ZATCA’s published guideline before relying on a specific number in a live case.
When ZATCA Can Reopen and Reassess a Transaction
RETT is a self-declared tax — the transferor registers the transaction and states its value. That declaration is not the end of the story. ZATCA has the power to verify the value of a real estate transaction, and the Regulations set out exactly when that power is most likely to be used.
ZATCA may verify the transaction value in six specific situations: transactions between related persons, transactions where the consideration is split between real estate and other assets, transactions with non-cash consideration, transactions with an unknown or unspecified value, transactions that were never notarized or disclosed to ZATCA at all, and any case where ZATCA suspects deliberate manipulation of value or another form of tax evasion.
A father sells a commercial building to his son’s company for SAR 3,000,000, below the SAR 4,200,000 fair market value an independent buyer would pay. Because this is a transaction between related persons, it sits squarely inside ZATCA’s verification grounds. If ZATCA determines the fair market value is SAR 4,200,000, the 5% RETT is recalculated on that higher figure — SAR 210,000 rather than SAR 150,000 — and the difference becomes due.
If ZATCA opens a valuation review, the transferor or transferee is entitled to submit their own assessment of the transaction value, provided it is issued by an accredited assessor — the process is not one-sided. Where ZATCA finds the declared value sits below fair market value, or where a transaction was never disclosed at all, ZATCA may set the value itself using approved real estate indicators or an approved assessor’s estimate.
The three-year window
ZATCA’s power to demand the recalculated tax is not open-ended. For a transaction that was properly disclosed and registered, ZATCA must demand any additional tax within three years of that disclosed transaction. For a transaction that was never disclosed, the three-year clock instead runs from the date ZATCA becomes aware of it — which means an undisclosed transaction does not become safe simply because time has passed since the transaction itself; it becomes safe three years after ZATCA finds out about it.
The Delay Fine the Regulations Confirm
Late payment carries a cost, and the Regulations tell us what that cost is built on. In setting out the transitional rules for tax that was already due before the current Law took effect, Article 14 explicitly applies “a fine equivalent to 2% of the unpaid tax value… in accordance with the provisions of Article 15 of the Law, for each month or part thereof.” That is the standard delay-fine mechanic the primary Law uses — 2% per month or part of a month that the tax remains unpaid.
What the Regulations do not spell out in full, because it belongs to the Law rather than these Regulations, is the complete current fine schedule and any overall cap that applies outside the specific transitional blend Article 14 describes. Do not assume the 50% ceiling mentioned in that transitional provision automatically applies to an ordinary current-period delay — verify the applicable cap directly before quantifying a real exposure.
Treat 2% per month as the direction of travel, not a number to plug into a client memo without confirmation. A transaction with SAR 100,000 of unpaid RETT sitting for four months at that rate is already looking at roughly SAR 8,000 in delay fines before any additional penalty for incorrect declaration or non-disclosure is layered on. The earlier the tax is paid, the smaller that number stays.
Who Is on the Hook — Transferor First, Transferee if Implicated
The transferor is responsible for paying RETT to ZATCA — that is the default position, and it holds in the large majority of transactions. Payment goes to ZATCA’s specified bank account, referenced against the transaction number ZATCA assigns.
The transferee is not automatically liable. But the Regulations make the transferee jointly and severally liable alongside the transferor in cases where ZATCA can show the transferee was the cause of the failure to pay — for example, where the transferor and transferee arranged between themselves to reduce or delay the tax due, or where an act by the transferee caused a violation that led to non-payment, underpayment, or late payment. Where that joint liability applies, ZATCA notifies both parties of the amount due and the payment date, and the transferee must confirm to ZATCA once they have paid their share.
Deceptive or disguised transactions
The Regulations also address transactions dressed up to look like something else — documents drafted to give a real estate transaction a different form, concealing the real transaction or its true terms. Where that happens, RETT is calculated on the real transaction, not the one the paperwork describes. A disposal structured as a long-term lease to avoid the transfer-of-ownership trigger, when the substance is a sale, does not escape the tax by virtue of its label.
Notices and Payment Deadlines
ZATCA’s notices are issued electronically, and a notice is deemed received on the date it is sent — not the date it is opened — unless there is evidence the delay in receiving it was outside the recipient’s control. That detail matters more than it looks: it means the clock on a payment deadline can start running before anyone has actually read the notice.
Payment deadlines vary by scenario rather than following one universal rule:
| Scenario | Payment deadline |
|---|---|
| Standard notarized disposal | On or before the date of disposal, as the general rule |
| Transfer of shares in a real estate company | Within 30 days of the share transfer, or the unconditional agreement to transfer, whichever is earlier |
| Exempt transaction that later breaches its conditions | Within 30 days of the date the exemption conditions were breached |
| Disposal not notarized in accordance with Kingdom regulations | Within 30 days of the disposal date |
| Off-plan property sale | On or before notarization with a notary public or accredited notary |
ZATCA also holds a specific override power: where it is proven that delaying payment was the transferor’s main purpose, ZATCA may demand payment within 30 days of the disposal regardless of which of the deadlines above would otherwise apply.
Objecting to an Assessment
An assessment is not automatically final. The Regulations route objections and grievances through the work rules of the Zakat, Tax and Customs Committees — the same committee structure that handles disputes across ZATCA’s other tax regimes. Once the period for objecting to a ZATCA decision expires without an objection being filed, or once the committees issue a final decision, or once a settlement is reached with ZATCA, the tax or fine amount becomes final.
One detail worth knowing before filing a grievance: if ZATCA has evidence or reasonable grounds to suspect the person filing may not pay the tax under dispute, it can require a cash or bank guarantee — capped at the amount of the unpaid tax and its associated fines — as a condition of the grievance proceeding.
Correcting and Disclosing Before ZATCA Does
Where the data registered for a transaction turns out to be wrong, the Regulations provide a correction channel: a request to correct the transaction data must be submitted within 30 days of the transferor becoming aware the registered data is incorrect, or of any event that breaches the standards for an exemption already claimed. If the correction increases the tax due, that additional amount becomes payable on the normal payment schedule. If it decreases the tax due, the transferor can apply for a refund of the overpayment — subject to the refund procedure’s own 12-month filing window and ZATCA’s 30-day decision period, which ZATCA can extend once.
If a transaction was undervalued, misdeclared, or an exemption condition has been breached: quantify the correct RETT position first, submit the correction within the 30-day window once you become aware of the issue, and pay any additional tax on the applicable deadline from the table above. Coming forward through the correction process is consistently a better position than waiting for ZATCA to identify the same issue through its own verification powers under Article 8.
Frequently Asked Questions
Yes, in specific circumstances: transactions between related persons, transactions with non-cash or split consideration, transactions with an unspecified value, undisclosed transactions, and cases of suspected value manipulation. Outside those grounds, ZATCA’s verification power is narrower.
Three years from the date of a disclosed transaction. For a transaction that was never disclosed, the three years runs from the date ZATCA becomes aware of it instead — so non-disclosure does not start any clock until ZATCA finds out.
The Implementing Regulations confirm the mechanic is 2% of the unpaid tax for each month or part of a month of delay, referencing Article 15 of the RETT Law. The full current schedule and any applicable cap sit in the Law itself — confirm the exact figure there before relying on it for a specific case.
Only where ZATCA can show the transferee caused the non-payment — for example, an arrangement between the parties to reduce the tax, or an act by the transferee that led to the tax not being paid. Otherwise, liability rests with the transferor.
Submit a correction request within 30 days of discovering the error. If it increases the tax due, pay the difference on the standard schedule. If it decreases the tax due, you can apply for a refund within the 12-month window that applies to refund claims.
- ZATCA can verify a transaction’s value in six defined situations — related-party deals, split or non-cash consideration, unspecified value, non-disclosure, and suspected manipulation — and must act within three years of disclosure, or three years of discovering an undisclosed transaction.
- The Regulations confirm a 2%-per-month delay fine mechanic via their transitional provision; the complete current fine schedule sits in the RETT Law itself and should be confirmed there for any specific figure.
- The transferor is primarily liable for payment; the transferee only becomes jointly liable where proven to have caused the non-payment.
- Disguised transactions are taxed on their real substance, regardless of how the paperwork describes them.
- Correcting an error within 30 days of discovering it — and paying or claiming a refund on the standard schedule — is a materially better position than waiting for ZATCA’s own verification process to find it.
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This article is based on the Real Estate Transaction Tax Law and its Implementing Regulations (Board Resolution No. 01-03-25 dated 24/09/1446H). It is provided for general information only and does not constitute tax or legal advice. Confirm current fine rates and caps directly against the RETT Law or ZATCA’s published guideline before relying on a specific figure. dariba.co is an independent platform with no consulting relationships.