A landlord in Dubai slides a renewal notice across the table: "Rent's going up 15%." Is that legal? Maybe. Is 25% legal? Almost certainly not. The answer depends on one number most tenants have never heard of: how far below the RERA Rental Index your current rent sits.
Here's how the cap actually works in 2026 — and how to respond when a notice breaks the rules.
The slab system in one table
Dubai (under RERA's Decree 43 of 2023 framework) doesn't cap every rent increase at a single percentage. Instead, allowable increases scale with how far below market your rent is, as measured by the official RERA Rental Index:
| How far below the RERA index your rent is | Maximum allowed increase | Notice required |
|---|---|---|
| Up to 10% below | No increase permitted | — |
| 11–20% below | Up to 5% | 90 days |
| 21–30% below | Up to 10% | 90 days |
| 31–40% below | Up to 15% | 90 days |
| 40%+ below | Up to 20% | 90 days |
Two things jump out. First, if you're paying anything close to market rate (within 10% of the index), your landlord cannot raise your rent at all on renewal. Second, 20% is the hard ceiling — no landlord, in any scenario, can demand more under the cap system.
The 90-day notice rule is make-or-break
Any permitted increase requires at least 90 days' written notice before it takes effect — delivered through a provable channel (registered mail, email with confirmation). No valid notice, no enforceable increase. If your landlord announces a hike two weeks before renewal, you can legally keep paying the old rate until proper notice is served.
The notice also isn't just a text saying "rent goes up." It should state the proposed amount and effective date — and the updated Ejari registration needs to reflect it, backed by the index calculation.
The first-year shield
Even the maximum 20% has one more gate: no rent increases at all during the first 12 months of a new tenancy contract, regardless of how far below market your rent is. Your first year is a fixed-cost guarantee. Increases only become possible from the contract's anniversary onward.
Check your position before you negotiate
The RERA Rental Index Calculator (on the DLD platform) compares your rent against similar properties by area, type, and size — and it's updated regularly as the market moves. Before responding to any renewal notice, run your numbers. A rent that's 25% below index means the landlord can ask for at most 10%; a rent at market means they can ask for zero.
Then compare their notice against three questions:
- Is my rent actually in the slab they're claiming?
- Did I get 90 days' written notice?
- Am I within my first year? (If yes — nothing can change.)
When the increase is illegal, here's your move
- Reply in writing citing the index bracket and notice requirements. Many landlords back down the moment the rules are quoted back at them.
- File with the Rental Dispute Settlement Centre (RDSC) — you have 30 days from receiving the notice. The RDSC mediates and issues binding decisions based on the index and tenancy law. The filing cost is modest relative to a year of inflated rent.
- Don't stop paying rent while disputing. Non-payment hands the landlord a legitimate eviction case; keep paying the contracted amount and let the RDSC rule on the increase.
Two adjacent protections worth knowing: eviction itself requires legal grounds and proper notice (typically 12 months for landlord-use scenarios under Article 25, with 30 days for non-payment), and none of the residential cap system applies to commercial leases, which follow their own contract terms.
The complete guide — with the full calculator walkthrough and 10 tenant FAQs — is on Villavow: Dubai Rent Cap Rules.
Keep going:
- Ejari renewal: the exact document checklist
- Getting an Ejari in Dubai, step by step
- Tawtheeq fees: Abu Dhabi's rental registration
Everything Dubai property, organized: Villavow · complete site index · Renting & tenancy in the UAE.
Disclosure: drafted with AI research assistance, reviewed and maintained by the VillaVow team.
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