🏠 Rent Increase Calculator

Apply a percentage increase to your current rent to get the new rent and the increase amount.

New Rent

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Increase Amount —

Reference: Korea's Rent Increase Cap

Under Korea's Housing Lease Protection Act, when a tenant exercises the contract renewal right, the rent increase is capped at 5% per year. This calculator is a general-purpose tool and does not enforce any cap — if you are handling an actual lease renewal, verify the applicable cap separately, since rules vary widely by country and region.

Korea Rent (Jeonse/Wolse) Calculator →

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GUIDE

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Rent Increase Formula

New rent = Current rent × (1 + increase % ÷ 100)
Increase amount = New rent − Current rent

For example, if your current rent is $1,000 and the increase is 5%, the new rent = 1,000 × 1.05 = $1,050, an increase of $50. At a 3% increase, the new rent would be $1,030 (a $30 increase). This calculator covers only the monthly rent line item (not a security deposit), and is handy for comparing several proposed increase percentages quickly.

Rent Increase Caps Around the World

Many countries and cities cap rent increases to protect tenants. In South Korea, when a tenant exercises the statutory renewal right, the increase is limited to 5% per year (Housing Lease Protection Act, Art. 7-2) — though this cap does not apply to a brand-new lease. Rules elsewhere vary widely: some jurisdictions tie caps to the consumer price index (CPI), while others have no rent-increase regulation at all. This is a general-purpose calculator that does not automatically apply any jurisdiction's legal cap, so always check the current law that applies to your lease before relying on the result. If you need Korea-specific jeonse/wolse (deposit-to-monthly) conversion, use the "Korea Rent Calculator" linked below.

Frequently asked questions

How do I calculate a rent increase?

Increase amount = current rent × increase % ÷ 100. For example, a $1,000 rent with a 5% increase produces a $50 increase, for a new rent of $1,050.

Is there a legal limit on how much rent can be raised?

It depends on your country and lease type. In Korea, a renewal exercised under the statutory right is capped at 5% per year. Many other places have different rules or none at all — always check current local law.

Does this calculator handle a security deposit?

No, this calculator only computes the monthly rent increase. For converting a Korean jeonse deposit to monthly rent (or vice versa), use the Korea Rent Calculator.