Rent increase calculator

How to calculate a rent increase

Three numbers describe any rent increase:

1. The monthly increase: new rent minus current rent.
2. The percentage: the monthly increase divided by your current rent, times 100.
3. The yearly cost: the monthly increase times twelve.

For a rise from $2,500 to $2,700, that is $200 a month, 8%, and $2,400 over a 12-month lease. If your renewal also adds or raises a fee, such as parking or an amenity fee, include it: what matters is the total you pay each month.

Why the yearly cost matters

Landlords quote increases monthly, and a monthly figure is easy to underestimate. $150 a month sounds manageable; $1,800 a year is a number most people would think carefully about. Seeing the full-year figure tells you how much a negotiation is worth, and how much effort and risk it deserves.

Percentage increase vs market increase

A percentage measures how much your rent changes. It does not tell you whether the new rent is in line with what similar homes nearby cost. The same 8% can be a catch-up for a unit that was well below the market, or a premium for one that was already at it.

That is why no particular percentage is fair or unfair by itself. The useful comparison is your proposed rent against current rents for comparable homes: same bedroom count, similar size, close by, listed recently. Our guide on what makes a rent increase reasonable goes into this in more detail.

What to do after calculating your increase

• Find your deadline. Note the date you must respond by, and give yourself time to do it well.
• Check whether any rule applies. Some places limit increases or require a certain amount of notice. That is a legal question to check locally, separate from negotiating.
• Compare with the market. Look at what comparable homes near you are listed for now.
• Decide whether to push back. If comparable homes cost less, you may have a case for a counter. See how to negotiate a rent increase.
• Put it in writing. A short, specific message works best. The rent increase letter templates give you a starting point.

When rental comps become useful

Once you know the size of the increase, comparable listings tell you whether there is room to negotiate. If several similar homes nearby are asking less than your proposed rent, that is evidence a landlord can check, and the basis for a specific counteroffer. If they are asking more, your renewal may already be competitive, and asking for other terms can make more sense. Our guide to rental comps explains what counts as comparable.