Estimate a rent-stabilized buyout amount from current rent, market rent, and a time horizon using a simple rent-difference rule of thumb.
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Rent-Stabilized Buyout Formula
The calculator estimates a rent-stabilized buyout using a rent-difference rule of thumb. It compares the current monthly rent to the estimated market monthly rent, then multiplies that difference by the time horizon.
Buyout = max(Market Rent - Current Rent, 0) * Months
If you enter the time horizon in months, the calculator uses:
Months = Time Horizon
If you enter the time horizon in years, the calculator uses:
Months = Time Horizon * 12
- Buyout: the estimated buyout amount.
- Market Rent: the estimated monthly rent for a similar unit at market rate.
- Current Rent: the tenant’s current monthly rent.
- Months: the time horizon converted to months.
- max(Market Rent – Current Rent, 0): the calculator does not use a negative rent difference. If market rent is lower than current rent, the difference is treated as 0.
The current rent and market rent must use the same currency. The buyout currency must also match. The calculator does not convert USD to EUR or EUR to USD.
Common Time Horizons for Rent-Difference Estimates
The time horizon is a judgment input. A longer time horizon produces a larger estimate because the monthly rent difference is counted for more months.
| Time Horizon | Months Used | How It Affects the Estimate |
|---|---|---|
| 6 months | 6 | Low estimate. Often used for a short payback view. |
| 1 year | 12 | Simple annual rent-difference estimate. |
| 2 years | 24 | Higher estimate that values two years of the rent gap. |
| 5 years | 60 | Much larger estimate. Sensitive to market rent assumptions. |
Factors That Can Change a Buyout Discussion
| Factor | Possible Effect |
|---|---|
| Accuracy of market rent | A higher market rent estimate increases the buyout estimate. A lower estimate reduces it. |
| Length of tenancy | A tenant who expects to stay longer may value the rent savings over a longer period. |
| Moving costs | Broker fees, movers, deposits, and higher replacement rent can make a simple rent-gap estimate too low. |
| Local rules | Rent-stabilized buyout rules and disclosure requirements vary by location. |
Example Rent-Stabilized Buyout Calculations
Example 1: Time horizon entered in months
You enter a current monthly rent of $1,500, a market monthly rent of $2,400, and a time horizon of 24 months.
Monthly Difference = 2400 - 1500 = 900
Buyout = 900 * 24 = 21600
The estimated buyout amount is $21,600.
Example 2: Time horizon entered in years
You enter a current monthly rent of $1,800, a market monthly rent of $2,750, and a time horizon of 3 years.
Months = 3 * 12 = 36
Monthly Difference = 2750 - 1800 = 950
Buyout = 950 * 36 = 34200
The estimated buyout amount is $34,200.
FAQ
Is this the legal value of a rent-stabilized buyout?
No. This is a rule-of-thumb estimate based on the rent difference over a chosen time horizon. It does not determine legal rights, required notices, tax treatment, relocation costs, or whether a buyout offer is fair under local rules.
What should you use for market rent?
Use a realistic monthly rent for a comparable non-stabilized unit in the same area. The estimate is very sensitive to this number. If the market rent is overstated, the buyout estimate will also be overstated.
Why does the calculator return 0 when current rent is higher than market rent?
The formula is based on the landlord’s possible rent gain after the unit is vacated. If the current rent is already higher than the market rent, there is no positive rent gap in this rule-of-thumb method, so the calculator treats the difference as 0.
