The Real Estate Regulatory Agency (RERA) rental increase calculator is a mandatory reference tool under Dubai tenancy law that determines whether a proposed rent increase is legally permissible and, if so, by how much.
Key takeaway
Dubai Law No. 26 of 2007, as amended by Law No. 33 of 2008, governs the landlord-tenant relationship in the emirate, while RERA Decree No. 43 of 2013 establishes the specific percentage bands for rent increases tied to the gap between existing rent and the Real Estate Regulatory Agency's index value. Landlords who increase rent without applying the calculator risk void notices and adverse awards at the Rental Dispute Settlement Centre. Tenants who understand the tool can reject unlawful increases at the notice stage rather than after paying. Federal and other emirate frameworks differ materially, so practitioners must confirm which jurisdiction's rules apply before advising.
Legal Basis: Dubai Tenancy Law and RERA Decree No. 43 of 2013
The primary legislation governing residential and commercial tenancies in Dubai is Law No. 26 of 2007 Regulating the Relationship Between Landlords and Tenants in the Emirate of Dubai, as amended by Law No. 33 of 2008. These laws establish notice periods, renewal mechanics, deposit rules and the foundational principle that rent increases are only permissible where the existing rent falls below the prevailing market rate as determined by RERA. Without that regulatory anchor, parties would have no objective standard against which to measure a proposed increase.
RERA Decree No. 43 of 2013 issued by the Chairman of the Dubai Land Department introduced a precise percentage schedule that quantifies permissible increases by reference to the gap between the existing contracted rent and the RERA index value for equivalent units. The decree replaced an earlier 2009 regime and remains in force as of 2026, with periodic updates to the underlying index values. Practitioners should confirm the current index figure from the RERA website or the Dubai REST application at the time of each transaction, as index values are updated to reflect market conditions.
Properties within DIFC and ADGM operate under separate frameworks. DIFC Law No. 10 of 2018 (the DIFC Leasing Law) and ADGM's common-law lease regime do not incorporate the RERA calculator. Practitioners advising on free-zone leases must therefore apply the relevant zone law rather than the Decree No. 43 framework, even where the physical location is within Greater Dubai.
How the RERA Calculator Works: Percentage Bands Explained
Under Decree No. 43 of 2013, the permissible increase is determined by comparing the existing rent to the RERA index value for that property type, area and size category. Where the existing rent is within ten percent below the index value, no increase is permitted. Where it falls between eleven and twenty percent below the index, an increase of up to five percent is permitted. The bands then escalate: eleven to twenty-five percent below the index permits up to ten percent; twenty-six to thirty-five percent below permits up to fifteen percent; and where the existing rent is more than forty percent below the index value, an increase of up to twenty percent is permitted.
The index value itself is derived from transactional data aggregated through the Dubai Land Department's real estate registration system. It reflects median rents for comparable units by zone, building type and floor area, and is not the same as an individual valuation or broker's market opinion. The calculator is publicly accessible through the Dubai REST application and the RERA official portal, and it produces a binding output: if the calculator confirms that no increase is permitted, a landlord's notice purporting to increase rent is legally void regardless of any contractual term to the contrary.
A common practitioner error is applying the calculator to gross floor area rather than the lettable area recorded in the tenancy contract registered on Ejari. Discrepancies arise particularly in villa communities and mixed-use buildings. The index lookup should always be run against the Ejari-registered unit specifications, and any dispute about classification should be resolved before the increase notice is issued.
Ejari Registration and Its Interaction with Rent Increases
Ejari, the mandatory online tenancy registration system operated by RERA, is the documentary foundation for any rent increase analysis. A tenancy contract that is not registered on Ejari cannot be enforced before the Rental Dispute Settlement Centre and the landlord cannot rely on it to establish the baseline contracted rent for calculator purposes. Both new contracts and renewals must be registered, and the registered rent figure is the figure the calculator uses as the starting point.
Registration must be completed by the landlord within a defined period following execution of the tenancy contract. Failure to register does not invalidate the contractual relationship between the parties but does limit recourse. Where a landlord issues a rent increase notice on an unregistered contract, the tenant can raise the Ejari defect as a preliminary objection at the Centre, which typically results in the hearing being deferred until registration is completed and the increase timetable restarted.
Practitioners advising corporate tenants negotiating multi-year leases should ensure that each annual renewal is separately registered on Ejari, because the calculator is applied to the rent at the time of the most recent registered renewal rather than to the original lease rent. In a rising market, multiple years without re-registration can distort the baseline and inadvertently expose the tenant to a larger permissible increase than would otherwise apply.
Notice Requirements for Rent Increases
Under Article 14 of Law No. 26 of 2007 as amended, a landlord who wishes to increase rent must give the tenant at least ninety days' written notice prior to the expiry of the lease term. Notice given after this ninety-day window, or notice given verbally, is ineffective and the rent for the renewal period continues at the existing rate by operation of law. The notice must specify the proposed new rent and, in practice, should attach or reference the RERA calculator output confirming permissibility.
The ninety-day rule operates independently of the calculator: even where the calculator confirms that an increase of, say, ten percent is permissible, a notice served eighty days before lease expiry is still invalid. The landlord would need to wait until the following renewal cycle to propose the increase. This timing asymmetry is a frequent source of landlord error and tenant remedy at the Centre.
Electronic service via notarised email or registered post to the address specified in the Ejari contract satisfies the notice requirement under current Centre practice. WhatsApp messages and informal emails, without supporting evidence of delivery, have been treated inconsistently by hearing officers and should not be relied upon as sole proof of service. Practitioners should advise landlord clients to use notary public service or registered courier and retain proof of delivery.
Permitted Versus Contractual Rent Increases: Which Prevails?
A contractual clause permitting an automatic annual rent increase of a fixed percentage, common in commercial leases, does not override the Decree No. 43 framework in Dubai. The RERA calculator cap is a statutory ceiling: where the contractual increase would exceed the permitted percentage, the excess is unenforceable and the rent increases only to the maximum permitted by the decree. This principle has been consistently applied by the Rental Dispute Settlement Centre.
In commercial leases, parties sometimes attempt to characterise automatic escalation clauses as service charge adjustments or fit-out amortisation payments in order to avoid the calculator framework. The Centre has treated such structures skeptically where the economic substance is a rent increase, and practitioners should advise commercial landlords that re-labelling a payment does not change its regulatory character if the core obligation is payment for occupation.
Outside Dubai, the position differs. Abu Dhabi does not operate an equivalent percentage-band system under a single decree, and rent increase regulation there is governed by Abu Dhabi Law No. 20 of 2006 and subsequent executive regulations, which give the competent authority broader discretion. Sharjah and the northern emirates have their own tenancy laws with different increase mechanisms. Federal civil code principles on contract apply throughout, but the overlay of rent-control regulation is entirely emirate-specific.
Tenant Rights: Challenging an Unlawful Increase
A tenant who receives a rent increase notice that exceeds the RERA calculator output is not required to accept the proposed figure. The correct step is to run the calculator against the Ejari-registered rent and the current index value, document the output and respond in writing to the landlord within a reasonable period before lease expiry, proposing the permissible rent as the renewal figure. If the landlord declines to accept the permissible rent, the tenant may file a dispute at the Rental Dispute Settlement Centre.
The Centre, established under Law No. 26 of 2007 and organised by Decree No. 26 of 2013, has exclusive jurisdiction over disputes arising from Dubai tenancy contracts, with limited exceptions for DIFC and ADGM properties. Filing fees are prescribed by regulation and are calculated as a percentage of the annual rent subject to a minimum and maximum. The Centre typically issues a first-instance decision within a defined hearing cycle, and appeals to the appellate division are available within thirty days of the decision.
Tenants in breach of the tenancy contract, for example those with overdue rent, face difficulty pursuing an increase challenge simultaneously, as the Centre may prioritise the landlord's eviction or debt claim. Practitioners advising tenants should ensure all rent obligations are current before a challenge is filed, to avoid a procedural setback that allows an unlawful increase to take effect by default.
Landlord Obligations: Grounds for Eviction Distinguished from Increase
Article 25 of Law No. 26 of 2007 as amended prescribes the exhaustive grounds on which a landlord may seek eviction. Disagreement over a rent increase is not itself a ground for eviction: a landlord cannot serve an eviction notice solely because the tenant refuses to pay a rent above the RERA calculator ceiling. The proper remedy for the landlord is to enforce the permissible increase and, if the tenant refuses to pay even that, pursue the debt claim at the Centre.
Where a landlord genuinely wishes to recover the property for personal use, major renovation or demolition, the relevant Article 25 notice periods and requirements apply in addition to the ninety-day rental notice regime. These grounds require twelve months' written notice for personal use or renovation and are subject to strict proof requirements at the Centre. A landlord who masks an eviction-for-sale or eviction-for-rent-increase as a personal-use eviction faces rescission of the notice and potential liability for the tenant's costs.
Corporate landlords managing multiple units through a real estate management company should ensure that the management agreement authorises the manager to issue increase notices on the landlord's behalf. Notices issued by a manager without express authority have been challenged at the Centre on standing grounds, and the resulting delay can cause the landlord to miss the ninety-day window for the relevant renewal cycle.
Enforcement and Rental Dispute Settlement Centre Procedure
The Rental Dispute Settlement Centre processes disputes through a mandatory amicable settlement stage before proceeding to adjudication. If the parties reach agreement at the amicable stage, the settlement is recorded as a binding agreement enforceable as a Centre decision. If no agreement is reached, the file is referred to a hearing officer who issues a first-instance decision. The process is designed to be accessible to unrepresented parties, but practitioners add value in structuring the statement of claim, managing the documentary record and advising on quantum.
Decisions of the Centre are enforceable through the Dubai Courts enforcement division in the same manner as court judgments. Where a landlord has collected rent above the permitted ceiling in reliance on a flawed increase notice, the tenant may seek repayment of the excess as part of the same Centre proceeding. Awards of costs are discretionary and the Centre does not automatically award legal fees, so practitioners should set client expectations accordingly.
Appeals from first-instance Centre decisions must be filed within thirty days and are heard by an appellate committee within the Centre structure rather than the Dubai Civil Courts. Cassation-level review by the Dubai Court of Cassation is available only on questions of law and within the periods prescribed by the Centre's procedural rules. This self-contained appellate hierarchy means that Centre jurisprudence on calculator issues develops largely internally, reinforcing the importance of practitioners maintaining direct familiarity with Centre decisions.
Corporate and Tax Considerations for Real Estate Investors
UAE corporate income tax, introduced by Federal Decree-Law No. 47 of 2022 effective for financial years beginning on or after 1 June 2023, applies to rental income earned by juridical persons that are tax residents in the UAE or that derive UAE-sourced income through a permanent establishment. A corporate landlord subject to the nine percent headline rate must account for rent increases as taxable revenue in the period in which they fall due. Over-declared rent that is subsequently reduced by a Centre award creates a timing difference requiring a correcting entry in the relevant tax period.
Natural persons earning rental income from residential properties held in their individual capacity are outside the corporate tax base under the current framework, as the decree does not apply to personal income from employment or personal investment activity. However, corporate investors holding real estate through special purpose vehicles must assess whether the SPV qualifies as a free-zone person entitled to the zero percent qualifying income rate, given that rental income sourced from mainland Dubai tenants may constitute non-qualifying income under the applicable ministerial decisions.
Value Added Tax at the standard rate of five percent, introduced under Federal Decree-Law No. 8 of 2017, applies to commercial property leases but is exempt for residential leases. Where a mixed-use building contains both commercial and residential units, landlords must apportion input tax recovery correctly and ensure that rent increase notices for commercial units reflect whether the stated rent is inclusive or exclusive of VAT. Mis-stating the VAT treatment in a commercial increase notice does not invalidate the increase but creates a secondary Federal Tax Authority compliance exposure.
Practical checklist
- Run the RERA calculator on the Dubai REST application using the Ejari-registered rent and current index value before issuing or responding to any increase notice.
- Confirm that any increase notice is served at least ninety days before lease expiry by a method that generates documented proof of delivery.
- Verify that the tenancy contract is registered on Ejari and that the registered rent matches the contractual rent before calculating the permissible increase percentage.
- For corporate landlords, assess whether rental income is subject to UAE corporate tax under Federal Decree-Law No. 47 of 2022 and whether commercial rents must carry VAT under Federal Decree-Law No. 8 of 2017.
This article is for general information only and does not constitute legal advice. For advice on a specific matter, please contact us. Last updated: 2 August 2026.