Rent Increases in Uruguay (2026): How to Calculate Yours Based on Your Lease
INGAR · · Rentals
Regime first, percentage second
Checking whether a rent increase was calculated correctly takes more than glancing at the percentage. Start by identifying which regime governs the lease. Only then can you know which index applies, when it takes effect, and whether the increase should be charged in full or in installments.
Uruguay runs several sets of rules side by side:
- For leases covered by Decreto-Ley 14.219, the adjustment is calculated using an official coefficient. It is not simply the change in the UR.
- Under the LUC's no-guarantor lease regime (LUC is Uruguay's 2020 Urgent Consideration Law), whatever the parties agreed on governs. If the rent is set in Uruguayan pesos and the lease specifies no method, CPI is applied every twelve months.
- In freely negotiated leases, the adjustment depends on what the parties agreed. The rules of Decreto-Ley 14.219 do not automatically carry over to them.
The math is usually simple. Picking the right rule is the part that demands attention. For the full legal picture, see Uruguay's rental law; we cover the no-guarantor regime separately in renting without a guarantor and the LUC.
Before you calculate: identify the regime
Look through your lease for the clauses on price, adjustment, and applicable law. The words that usually show up are "actualización" (updating), "reajuste" (adjustment), "índice" (index), "escalonamiento" (stepped increases), "IPC" (CPI), "UI," "UR," or "Decreto-Ley 14.219."
Leases governed by Decreto-Ley 14.219
The Decreto-Ley 14.219 regime still matters a great deal for certain homes whose building permit predates June 2, 1968. The date matters because article 102 carved buildings authorized after that day out of much of the decree-law.
That said, the permit date shouldn't be used as a blind, standalone diagnosis. If the lease is unclear or the property's history is murky, review the paperwork before you accept or contest an increase.
Leases under the LUC
Articles 421 and following of Ley 19.889 created an optional regime for leases without a guarantor. The contract has to state expressly that the parties are opting into it.
On adjustments, article 422 lets the parties agree on currency, units, and indices. When the rent is expressed in Uruguayan pesos and no updating method was agreed, the law itself supplies one: an annual CPI adjustment.
Freely negotiated leases
Outside the regimes above, the validly agreed adjustment clause is what rules. A lease may provide for CPI, UI (Uruguay's inflation-indexed accounting unit), a flat percentage, a schedule of rising rents, or any other permissible mechanism.
A lease with no adjustment clause does not entitle the landlord to invent one later. Nor does its absence, on its own, make the contract invalid. It may well mean the rent stays fixed in the agreed currency for the term, but the conclusion depends on the full text and on the applicable regime.
UR, URA, CPI, and UI: four different things
A large share of the errors out there come from treating these acronyms as interchangeable.
- UR (Unidad Reajustable, or "adjustable unit"). Created by article 38 of Ley 13.728, its value is tied to Uruguay's average wage index. It can serve as a unit of account: if rent was set as a fixed number of UR, the peso amount depends on the unit's value.
- URA (Unidad Reajustable de Alquileres, the rental version of that unit). It is not another name for the UR. Article 14 of Decreto-Ley 14.219 provides that a given month's URA is the arithmetic average of that month's UR and the UR of the two immediately preceding months. That average is assigned to the last of the three months.
- CPI (Índice de Precios del Consumo, the consumer price index). It measures price changes in a basket of goods and services and is calculated by the Instituto Nacional de Estadística (Uruguay's national statistics bureau).
- UI (Unidad Indexada, the inflation-indexed unit). It carries a daily value and tracks the CPI according to its own methodology. Saying it "follows the CPI" works as a rough explanation, but it does not mean the change in the UI between any two dates will match the latest published annual inflation figure exactly.
How the Decreto-Ley 14.219 coefficient works
If the lease genuinely falls under this regime and has no stepped annual increases, article 15 sets an adjustment every twelve months.
The calculation compares two changes:
- The CPI for the month before the adjustment against the same month a year earlier.
- The URA across those same months.
The smaller of the two applies. In shorthand:
coefficient = the lower of the annual CPI change and the annual URA change
That's why you can't take the change in the UR and apply it straight to the rent. The law compares CPI against URA, which already folds in an average of three UR values.
The Poder Ejecutivo (Uruguay's executive branch) publishes the figures and the applicable coefficient monthly in the Diario Oficial (the official gazette). To check an increase, using that official coefficient is safer than rebuilding it from scattered data.
The new rent takes effect on the first day of the month following the one the adjustment corresponds to and holds for twelve months, subject to the phase-in that applies to certain homes.
The four-month phase-in: what the law actually says
For residential leases covered by articles 14 and 15 of Decreto-Ley 14.219, article 16 of Ley 15.799 requires the annual increase to be folded in over three stages:
- one-third during the first four-month period;
- two-thirds during the second;
- the full increase during the third.
This is the legal source of the phase-in. It is not merely an administrative practice of the Ministerio de Economía y Finanzas (Uruguay's finance ministry).
The rule should not be carried over automatically to just any lease. Ley 15.799 itself excludes the freely negotiated situations contemplated by Decreto-Ley 14.219. In practice, the building permit date — before or after June 2, 1968 — is a central signal for telling the cases apart. The MEF applies that criterion in its guidance for leases administered by the Servicio de Garantía de Alquileres (its rental guarantee service).
An example with no rounding headaches
Say the rent is $10.000 and the official coefficient is 1,09:
| Calculation | Amount |
|---|---|
| Fully updated rent | $10.000 × 1,09 = $10.900 |
| Total increase | $10.900 − $10.000 = $900 |
| One-third of the increase | $300 |
| First four-month period | $10.300 |
| Second four-month period | $10.600 |
| Third four-month period | $10.900 |
The coefficient is not reapplied at each stage. You calculate the full annual increase first, then phase in one-third, two-thirds, and three-thirds of that difference.
When the result doesn't divide neatly into three, rounding can leave a few cents of difference. What matters is that the third period lands on the fully updated rent — not on something higher.
What happens if the final coefficient hasn't been published yet
Article 15 anticipates this problem too. If the adjustment date arrives before the necessary URA or CPI figure has been published, one of the following is used provisionally:
- a coefficient prepared by the Contaduría General de la Nación (Uruguay's national accounting office); or
- if that coefficient isn't available either, the previous month's adjustment.
Once the final figure is published, the difference is trued up. On a rent of $30.000, for example:
| Application | Math | Result |
|---|---|---|
| Provisional coefficient 1,085 | $30.000 × 1,085 | $32.550 |
| Final coefficient 1,082 | $30.000 × 1,082 | $32.460 |
| Difference to be trued up | $32.550 − $32.460 | $90 |
Here the tenant was charged $90 too much, and that difference has to be corrected. If the final coefficient came in above the provisional one, the correction would run the other way.
This is not the same as demanding, years later, an increase that was never billed. It's a correction the law expressly provides for, swapping a placeholder figure for the definitive one.
Stepped increases: the article 3 option
Decreto-Ley 14.219 allows a lease to set rising rents for successive twelve-month periods. If one of those increases exceeds what the legal coefficient would produce, the tenant may opt to switch to the adjustment system of articles 14 and 15.
This isn't an informal option, and it isn't open indefinitely. Article 3 requires that the tenant:
- exercise it only once during the lease;
- do so within fifteen calendar days of the coefficient's publication in the Diario Oficial;
- notify the landlord or property manager by certified telegram (telegrama colacionado, a legally recognized notice in Uruguay).
Once exercised, the rent keeps being updated by the statutory mechanism until the property is handed back.
This escape hatch belongs to leases covered by Decreto-Ley 14.219. It is not a general power to replace any agreed increase in a freely negotiated lease.
How rent is adjusted under the LUC
In the no-guarantor lease regime, the contract governs first. Article 422 allows the rent to be set in Uruguayan pesos or foreign currency, in UR or in UI, and leaves the updating method to the parties.
If the lease sets rent in pesos and specifies no method, the law calls for a CPI adjustment every twelve months. With a rent of $30.000 and an applicable annual CPI of 7%, for instance:
$30.000 × 1,07 = $32.100
What if the rent is in dollars?
The CPI default is written for prices in Uruguayan pesos only. If rent was set in dollars or another foreign currency and no adjustment method was agreed, article 422 supplies no default index.
That doesn't automatically make the lease invalid, nor does it let anyone tack on CPI unilaterally. If the parties agreed on a flat USD 800, the contractual rent remains USD 800, even as its peso equivalent moves with the exchange rate.
If there's an ambiguous clause trying to pair foreign currency with some other adjustment, sort it out before the application date rolls around.
Leases in UI or UR
It's also worth distinguishing a rent expressed in units from a rent in pesos, adjustable by the change in a unit.
- If the lease says "5.000 UI per month," the obligation stays at 5.000 UI and its peso equivalent shifts with the quoted rate on each payment date.
- If it says "$30.000, adjusted annually by the change in the UI," the rent stays in pesos and changes on the agreed date using the agreed formula.
The same logic holds for the UR. The name of the index isn't enough — you have to read how it was built into the price.
Got an increase that doesn't add up? Ask for the calculation in writing and compare it against your lease. If you'd like us to look at it with you before you pay or push back, message us on WhatsApp. For a legal dispute, consult a professional.
Can they charge a retroactive increase?
There's no one-size-fits-all answer.
A difference may indeed be owed if the adjustment took effect automatically on a given date and was simply billed later. But the fact that someone invoices a difference doesn't, by itself, prove the whole retroactive amount is correct.
Among the things worth reviewing:
- the lease's regime;
- the adjustment clause;
- the date from which it should have applied;
- the receipts issued;
- payments accepted without reservation;
- how the parties behaved afterward;
- the statute of limitations.
A disputed retroactive charge also shouldn't be confused with the true-up of a provisional coefficient under article 15. Those are different situations.
Facing a sizable claim, ask for the calculation in writing before you pay: base rent, coefficient or index, period used, effective date, and the month-by-month math.
How to check the math
Work through it in this order:
- Pin down the regime. Check the law the lease declares and, where relevant, the building permit date.
- Read the price clause. Determine whether the amount is in pesos, dollars, UI, or UR, and whether an adjustment formula exists.
- Identify the date. Don't default to the most recent figure out of habit: you need the period tied to the anniversary or to whatever moment the lease specifies.
- Find the official figure. For the Decreto-Ley 14.219 regime, use the coefficient published in the Diario Oficial. For CPI and UI, check with the INE.
- Apply the full mechanism. Include the phase-in only if it applies, and keep any provisional true-up separate.
- Compare it with what you were charged. If the numbers don't match, ask for an itemized calculation.
With the lease, the date, and the official figure in front of you, most of these calculations can be checked in a few minutes.
Common mistakes
"The landlord picks the percentage"
A landlord can't change the rent unilaterally just because the number seems reasonable to them. Under Decreto-Ley 14.219, the statutory mechanism applies. Under the LUC or in a freely negotiated lease, the agreed method governs, plus the law's default rule where relevant.
"The legal adjustment is the change in the UR"
It isn't. Under the articles 14 and 15 system, the changes in the CPI and the URA are compared, and the smaller one is used.
"All rents are adjusted once a year"
Not as a universal rule. Decreto-Ley 14.219 works in twelve-month periods, and the LUC applies annual CPI when its default rule kicks in. But a rent set as a number of UI changes its peso equivalent as the unit's value moves, and a freely negotiated lease depends on the formula the parties chose.
"Every pre-1968 building adjusts the same way"
The permit date is decisive for classification, but it doesn't replace a review of the lease and the property's records. Don't sort a case by the building's apparent age alone.
"Article 16 caps any rent at a percentage of income"
Article 16 of Decreto-Ley 14.219 contains a historical rule tied to the income of the household occupying the property, but its final paragraph excludes leases signed after the rule took effect. It does not operate as a general ceiling for present-day leases.
Don't confuse it with article 16 of Ley 15.799, which is the provision behind the four-month phase-in.
"The UI rises exactly as much as the CPI"
The UI is built from the CPI, but it carries a daily value and its own updating methodology. Comparing different periods or dates can yield different changes. To run the numbers on a lease, use the formula and the dates the lease specifies.
Frequently asked questions
Where do I find the Decreto-Ley 14.219 coefficient?
The Poder Ejecutivo publishes it monthly in the Diario Oficial alongside the data required by article 15. Use the one for the month of your adjustment.
Does the coefficient compare the UR with the CPI?
No. It compares the change in the URA with the change in the CPI and applies the smaller one. The URA is an average of three monthly UR values.
Is the four-month phase-in a decision by the MEF?
Not just that. For homes covered by articles 14 and 15 of Decreto-Ley 14.219, it comes from article 16 of Ley 15.799. The MEF's guidance shows how it's applied within the Servicio de Garantía de Alquileres.
When does the new rent take effect under Decreto-Ley 14.219?
Article 15 provides that the change takes effect on the first day of the following month and stays in place for twelve months, with whatever phase-in applies.
Why was my increase corrected afterward?
It may be that a provisional coefficient was used while an official figure was still pending. When the definitive one appears, the law requires the difference to be trued up.
Does the LUC always mean an annual CPI adjustment?
No. The agreed method governs first. Annual CPI serves as the default rule when there's no express method and the rent is set in Uruguayan pesos.
Which index applies to a dollar-denominated LUC lease that says nothing?
Article 422 sets no default index for foreign currency. Adding CPI automatically isn't correct.
Can I swap a stepped increase for the legal coefficient?
Only if your case falls under article 3 of Decreto-Ley 14.219 and you meet its form and deadline: once during the lease, within fifteen calendar days of publication, and by certified telegram.
The short version
Don't check an increase by looking only at the percentage. Look, in this order, at the regime, the currency, the clause, the date, and the official figure.
In leases governed by Decreto-Ley 14.219, the coefficient compares CPI and URA and takes the smaller change. For certain homes, the increase phases in by thirds across three four-month periods. Under the LUC, what the parties agreed governs, and if the rent is in Uruguayan pesos with no express method, annual CPI applies. In a freely negotiated lease, the agreement rules: you don't import the regulated regime's coefficient by default.
If the calculation doesn't show where the number came from, ask for it in writing. A verifiable calculation should let you identify the base, the index or coefficient, the period, and the effective date.
This article offers general information and is not a substitute for legal advice on a specific lease.
Sources
- Decreto-Ley 14.219 — articles 3, 14, 15, 16, and 102 (IMPO)
- Ley 15.799 — articles 16 and 22 (IMPO)
- Ley 13.728 — article 38, Unidad Reajustable (IMPO)
- Ley 19.889 — article 422, rent and adjustment without a guarantor (IMPO)
- MEF — Servicio de Garantía de Alquileres, "¿Cómo reajusta mi carpeta?"
- INE — methodology for calculating the Unidad Indexada
Sources consulted on July 27, 2026.