Choose straight line rent, total contract term, or sum of rent payments, then enter the two known lease values.
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Straight Line Rent Formula
Straight line rent spreads the total rent cost evenly across the full lease term. Instead of using the actual payment due in each month, it calculates one average monthly rent amount for the contract period.
- SLR = Straight line rent, in dollars per month
- SRP = Sum of all rent payments over the contract, in dollars
- T = Total contract term length, in months
The calculator uses the same relationship in three ways. If you enter the total rent payments and the lease term, it calculates the straight line rent per month. If you enter the straight line rent and the lease term, it calculates the total rent payments. If you enter the total rent payments and the straight line rent, it calculates the contract term length in months.
Common Lease Term Lengths in Months
Use this table to convert common lease terms into the month value used in the formula.
| Lease Term | Months to Enter |
|---|---|
| 1 year | 12 |
| 2 years | 24 |
| 3 years | 36 |
| 5 years | 60 |
| 10 years | 120 |
How Straight Line Rent Compares to Actual Rent Payments
Straight line rent is an average. It may not match the amount paid in a specific month when the lease has free rent, rent increases, or other uneven payment terms.
| Lease Pattern | Effect on Straight Line Rent |
|---|---|
| Same rent every month | Straight line rent equals the monthly payment. |
| Free rent period | Straight line rent is lower than the rent paid in the paid months because free months are included in the average. |
| Scheduled rent increases | Straight line rent is the average of the lower early payments and higher later payments. |
| Uneven rent schedule | Add all rent payments first, then divide by the total number of months. |
Example
Example 1: Calculate straight line rent
You have a lease with total rent payments of $120,000 over 60 months.
The straight line rent is $2,000 per month.
Example 2: Calculate total rent payments
You know the straight line rent is $3,500 per month and the lease term is 36 months.
The sum of all rent payments is $126,000.
FAQ
What is straight line rent?
In this calculator, straight line rent is the simple average of the included rent payments over the full lease term. Accounting recognition depends on the applicable framework and lease classification; this tool does not calculate a lease liability, incentives, taxes, or a complete accounting schedule.
Does straight line rent include free rent months?
Yes, if the free rent months are part of the lease term, they are included in the total contract term. The free months reduce the average monthly straight line rent because they add months without adding rent payments.
Is straight line rent the same as monthly cash rent?
Not always. Monthly cash rent is the amount actually paid in a specific month. Straight line rent is the average monthly rent over the full lease term. They are the same only when the rent payment is identical every month.
