Real estate & rental
Rental Lease Calculator
Works the total value of a lease, where concessions change the effective rent.
Result
Tenancy rules are set by state and often by city, and they are among the most locally variable areas of law there is. Deposit limits, notice periods, late fee caps, interest on deposits and rent increase restrictions all differ and change. This is arithmetic, not legal advice; check your own jurisdiction before relying on any of it. Effective rent is what the property actually earns; face rent is what appears in the listing and in the comparable data. Concession-heavy markets can show flat face rents while effective rents fall substantially, which is why investors ask about concessions specifically.
Get a Free Business AuditHow the calculation works
Monthly rent times the term, plus any additional charges, less concessions such as free months or move-in allowances, giving total lease value and effective monthly rent. Effective rent is the figure that compares two offers honestly, since a higher nominal rent with a free month can be cheaper than a lower rent without one.
What moves the number
- Term length and total nominal rent.
- Concessions and how they are amortised.
- Additional monthly charges beyond base rent.
- Escalations within the term.
Where this one goes wrong
Concessions make nominal rent misleading in both directions, which matters to a landlord as well as a tenant: a unit let at full nominal rent with two months free has a lower effective rent than the advertised figure, and the comparable set has to be read the same way. Calculate effective rent across the term for any comparison. Tenant selection also has to comply with fair housing requirements, which constrain the criteria applied regardless of how the lease is priced.
Before you quote
- Compare offers on effective rent across the term.
- Include additional monthly charges, not just base rent.
- Apply tenant selection criteria consistently and lawfully.
Questions
About this calculator
What is effective rent?
Total rent over the term less concessions, divided by the months. It is the figure that compares two offers honestly, since a higher nominal rent with a free month can be cheaper overall than a lower rent without one.
Why do landlords offer free months instead of lower rent?
Because the nominal rent is what appears in comparable data and in future increases, while a concession is a one-off. The effective rent is lower either way, which is why a comparable set has to be read for concessions as well as headline figures.
Are there rules on who can be selected as a tenant?
Yes. Federal fair housing law prohibits discrimination on protected characteristics, and state and local laws add further protected classes in many places. Applying consistent, documented criteria to every applicant is both the compliant and the practical approach.
The formula
effective rent = (face value - concessions + other charges) / term in months
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How to use this calculator
- Monthly rent ($). Enter your own figure; the page starts at $2,400.
- Lease term (months). Enter your own figure; the page starts at 12.
- Free months given. Enter your own figure; the page starts at 1.
- Other concessions ($). Moving allowance, waived fees, upgrades.
- Other monthly charges ($). Pet rent, parking, utilities billed back.
The result updates as you type, so you can try a figure, see what it does to effective monthly rent, and change it back. Nothing you enter is sent anywhere or saved.
A worked example
These are the figures the calculator opens with. Every number in the results column below is produced by the same calculation the page runs, so you can follow it through before putting your own figures in.
What goes in
| Input | Value |
|---|---|
| Monthly rent | $2,400 |
| Lease term (months) | 12 |
| Free months given | 1 |
| Other concessions | $0 |
| Other monthly charges | $45 |
What comes out
| Result | Value |
|---|---|
| Effective monthly rent main result | $2,245.00 |
| Total over the term | $26,940 |
| Face value of the lease | $28,800 |
| Value given away | $2,400 |
| Effective discount | 8.33% |
Face rent is $2,400.00 but effective rent is $2,245.00 once $2,400 of concessions are spread across the term, a 8.33% discount.
How sensitive the answer is
Holding everything else steady and changing only monthly rent, this is what happens to effective monthly rent. It is worth knowing which of your inputs the answer actually hinges on, and which barely move it.
| Monthly rent ($) | Effective monthly rent |
|---|---|
| $1,200 | $1,145.00 |
| $1,800 | $1,695.00 |
| $2,400 example above | $2,245.00 |
| $3,600 | $3,345.00 |
| $4,800 | $4,445.00 |
Every other input is held at the example value while this one changes, which is not how a real job behaves. Treat it as a guide to which number matters most, not as five separate quotes.
What each figure means
- Monthly rent ($)
- A money amount, starting at $2,400.
- Lease term (months)
- A number, between 1 and 120, starting at 12.
- Free months given
- A number, between 0 and 12, starting at 1.
- Other concessions ($)
- Moving allowance, waived fees, upgrades.
- Other monthly charges ($)
- Pet rent, parking, utilities billed back.
What the results tell you
| Result | What it is |
|---|---|
| Effective monthly rent | The headline result. A money figure. |
| Total over the term | A money figure. |
| Face value of the lease | A money figure. |
| Value given away | A money figure. |
| Effective discount | A percentage. |
What is not in this number
Property figures here exclude the costs that decide whether a deal works: vacancy, maintenance, management, capital expenditure and the transaction costs at both ends. A return that looks strong before those frequently does not survive them.
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