Enter the current rent and the increase percentage to compute the new rent, the monthly increase, and the extra rent paid over a year.
Input Data
Results
At a glance:A rent increase adds a percentage of the current rent; the annual extra cost is twelve times the monthly increase.
Formula
newRent = currentRent × (1 + increasePercent%)
increaseAmount = newRent − currentRent
annualIncrease = increaseAmount × 12
$$\text{NewRent} = \text{CurrentRent} \times (1 + \text{Increase}\%)$$$$\text{MonthlyIncrease} = \text{NewRent} - \text{CurrentRent}$$$$\text{AnnualExtra} = \text{MonthlyIncrease} \times 12$$How to Use
- Enter the current monthly rent.
- Enter the increase percentage.
- Review the new rent, monthly increase, and annual extra cost.
FAQ
Is there a statutory cap on rent increases in Hong Kong?
For general private residential and shop tenancies there is no uniform statutory cap; the renewal increase is set by market supply and demand and negotiation between the two sides. The exception is subdivided units under the Landlord and Tenant (Consolidation) (Amendment) Ordinance from 2022, which sets a cap on renewal increases and tenancy-security protection. Some public or subsidised housing has its own mechanism — check your lease terms.
The percentage looks small — why calculate the annual cost?
Percentages hide the real burden. Converting the increase into a monthly amount and multiplying by 12 shows how much extra you pay over a full year, helping you decide rationally whether to accept, negotiate or move. For example, a 5% rise on HK$15,000 rent is an extra HK$9,000 a year.
Can I use this to work backwards to an affordable increase?
Yes. Try different increase percentages to see how the new rent and annual cost change, then find the range you can bear as a negotiation floor. Pair it with the Rent Affordability Calculator to check whether the new rent pushes your rent-to-income ratio above a safe level.
How do I judge whether the landlord's increase is reasonable?
Check the Rating and Valuation Department's monthly Private Domestic Rental Index for the overall trend of comparable units in your district as an objective basis. If the index is flat or falling but the landlord demands a large rise, you have room to negotiate; in a rising-rent cycle a moderate rise may be reasonable. Also compare actual asking rents of similar nearby listings.
What is the formula and data basis of this calculator?
The tool uses simple percentage arithmetic (new rent = current rent × (1 + increase%)), involving no legal standard. For market trends refer to the Rating and Valuation Department's rental index; for tenancy protection (e.g. subdivided-unit regulation) refer to the Landlord and Tenant (Consolidation) (Amendment) Ordinance. Results are for estimation and negotiation only.
Content review: Calculatorism Finance Team. Results are for reference only; please refer to the relevant authorities for the official figures.