Free rent
Each free month adds a full month of income to the receivable.
Resources · Calculators
Straight-line rent calculator
Enter a lease's monthly rent, term, rent-free months and escalation to see the straight-line monthly income, the total fixed rent and how the straight-line (deferred rent) receivable builds and unwinds. The calculator runs in your browser; nothing you enter is sent anywhere.
Straight-line calculator
| Month | Cash | Straight-line | Deferred |
|---|---|---|---|
| 1–3 | $0 | $2,111 | +$6,333 |
| 4–12 | $2,000 | $2,111 | +$1,000 |
| 13–24 | $2,100 | $2,111 | +$133 |
Calculate your straight-line rent
Total fixed rent–
Straight-line per month–
Peak receivable–
| Month | Cash rent | Straight-line income | Receivable balance |
|---|
Shows the first 24 months, each lease anniversary and the final month. Excludes incentives, initial direct costs and variable payments. Not accounting advice.
How it works
How does the calculator work?
The calculator works in four steps: it builds the monthly cash rent schedule from your inputs, totals all fixed rent over the term, divides that total by the number of months to get straight-line income, and tracks the difference as a receivable that returns to zero at lease end.
- 01
It builds the cash rent schedule
Each month's rent is the starting rent increased by the escalation at each step, with rent-free months set to zero.
- 02
It totals fixed rent
All scheduled payments over the term are added together.
- 03
It divides by the term
Total fixed rent divided by the number of months gives the straight-line income per month.
- 04
It tracks the receivable
Each month, straight-line income minus cash rent is added to the receivable balance, which returns to zero at the end of the lease.
What is straight-line rent, in brief?
Straight-line rent spreads a lease's total fixed payments evenly over its term. Landlords recognise operating lease income this way under ASC 842 and IFRS 16, so free rent and escalations do not distort monthly income. The receivable rises during free months and early years when cash is below the average, then falls as cash rises above it.
See revenue recognition and straight-line rent and our guide to straight-line rent calculation for GAAP.
Compare
What does the calculator leave out?
The calculator leaves out items that need judgement or data a simple schedule cannot hold: lease incentives, initial direct costs, variable payments such as CPI increases, percentage rent and recoveries, lease modifications and collectability concerns. The table shows how each is usually treated in practice under ASC 842 and IFRS 16.
| Item | Treatment in practice |
|---|---|
| Lease incentives paid to the tenant | Usually reduce total lease payments and straight-line income |
| Initial direct costs, such as commissions | Amortised separately over the term |
| CPI or market-based increases | Variable; recognised when they occur, not straight-lined |
| Percentage rent and recoveries | Variable; recognised when earned |
| Lease modifications | Remaining schedule recalculated from the modification date |
| Collectability concerns | Income may be limited to cash received under ASC 842 |
How does RIOO do this for a whole portfolio?
RIOO generates straight-line schedules from each lease's rent schedule on NetSuite, posts monthly entries and tracks the receivable by lease, property and entity. When a lease is amended, the schedule recalculates automatically. See lease accounting under ASC 842 and IFRS 16.
Why do landlords straight-line rent at all?
Landlords straight-line rent because accounting standards require operating lease income to be recognised evenly over the lease term, even when cash payments are uneven. Free months, stepped increases and front-loaded payments would otherwise make income swing from month to month, misleading investors and lenders about a property's real earning power.
For a commercial portfolio with dozens of leases, those swings add up. Straight-lining shows the stable income each lease earns, while the receivable records how far cash has run ahead of or behind that income.
How it works
How do you calculate straight-line rent by hand?
To calculate straight-line rent by hand, add up every fixed rent payment due over the non-cancellable lease term, then divide by the number of months in that term. The result is the monthly income you recognise, and the difference between it and each month's cash rent is booked to the straight-line receivable.
- 01
List every fixed payment
Include free months as zero and every scheduled step.
- 02
Total the payments
This is the total cash rent over the lease term.
- 03
Count the months
Use the lease term from commencement, not from signing.
- 04
Divide total by months
This gives the even monthly income.
- 05
Compare with cash each month
Book the difference to the receivable.
Compare
What does a worked example look like?
A worked example makes the method concrete. Take a 36-month lease with three months free, then 2,000 a month for the rest of year one, 2,100 in year two and 2,200 in year three. Total cash rent is 76,200, so straight-line income is 2,116.67 a month.
The receivable peaks at 7,400 after month 12, falls slightly in year two and unwinds through year three, ending at zero.
| Period | Cash rent per month | Straight-line income | Receivable movement |
|---|---|---|---|
| Months 1–3 | 0 | 2,116.67 | +2,116.67 |
| Months 4–12 | 2,000 | 2,116.67 | +116.67 |
| Months 13–24 | 2,100 | 2,116.67 | +16.67 |
| Months 25–36 | 2,200 | 2,116.67 | −83.33 |
In detail
Which inputs change the result the most?
The inputs that change straight-line results the most are free rent periods, the size and timing of escalations and the lease term itself. A longer free period or steeper steps widen the gap between cash and income, so the receivable grows larger and takes longer to unwind before the lease ends.
Escalation rate
Higher steps push more income forward into early periods.
Escalation interval
Biennial steps create larger jumps than annual ones.
Term
Options to extend count only if exercise is reasonably certain.
How does straight-line rent appear in NetSuite with RIOO?
With RIOO, straight-line rent is calculated from the lease schedule stored in NetSuite and posted automatically each period. RIOO books monthly income at the straight-line amount, records the receivable difference and keeps a schedule per lease, so the controller does not maintain a separate spreadsheet for every commercial tenant.
Because the schedule lives with the lease, amendments such as an extension or a rent review recalculate the remaining income from the change date. Reports show the receivable balance by lease, property and entity for audit and investor reporting. Read more in straight-line rent revenue recognition.
Who is this calculator NOT for?
This calculator is not for leases with variable rent based on sales or an index, leases with complex incentives or initial direct costs, or lessee accounting under ASC 842 and IFRS 16. It gives a quick check for a single landlord lease with fixed payments, not a substitute for your auditor's judgement or a portfolio system.
Checklist
When should you move from a spreadsheet to a system?
Move from spreadsheets to a system when straight-line schedules start taking real time each month or when audit questions become hard to answer. These signs suggest your portfolio has outgrown a calculator and a spreadsheet per lease. It needs schedules generated from the lease record itself.
- More than a handful of leases with free rent or steps
- Frequent amendments, extensions or early terminations
- Several legal entities or currencies
- Auditors asking for lease-by-lease receivable support
- Month-end journals keyed manually from spreadsheets
In detail
What should you check before relying on the result?
Before relying on a straight-line result, check that the lease term, commencement date and every payment step match the signed lease. Small input errors, such as starting the term at signing rather than handover, shift income between periods and can create audit questions that take longer to answer than the calculation itself.
Commencement date matches the date the tenant gained access
Free months and their position in the term are correct
Every escalation step and its effective month is included
Renewal options are excluded unless exercise is reasonably certain
Talk to a specialist
See straight-line rent calculator on your own portfolio.
The calculator runs in your browser; nothing you enter is sent anywhere.
What is a straight-line rent calculator used for?
It shows the even monthly income a landlord recognises over a lease with uneven payments, such as free rent or escalations, and how the straight-line receivable changes each month. Accountants use it to check schedules and journal entries. It is also useful in lease negotiations to show the income effect of free months.
Does this calculator follow ASC 842?
It applies the basic straight-line method used for operating leases under ASC 842 and IFRS 16. It does not handle incentives, initial direct costs, variable payments or modifications, which need professional judgement. Use it to check the arithmetic, then confirm the accounting treatment with your auditor or adviser.
Why does the receivable go back to zero?
Over the full lease, total straight-line income equals total cash rent. The receivable captures timing differences only, so it builds when cash is below the average and unwinds when cash is above it, ending at zero. Its balance appears on the landlord's balance sheet as an asset.
Can I model escalations that are not annual?
Yes. Set "Escalation every (months)" to the step interval, for example 24 for increases every two years or 6 for half-yearly steps. Run the calculation again after each change to see how the schedule and receivable shift with different step patterns.
Is my data saved or sent anywhere?
No. The calculation runs entirely in your browser, and nothing you enter is stored or transmitted. Closing or refreshing the page clears the inputs, so copy any schedule you want to keep into your own spreadsheet or working papers before you leave.
Does straight-line rent apply to residential leases?
It can, but residential leases are usually short and level, so the difference between cash and straight-line income is small. Straight-lining matters most for commercial, retail and industrial leases with long terms, free months and stepped rents, where the receivable can become material for a property or an entity.
What happens to the receivable if a tenant leaves early?
If a lease ends early, any remaining straight-line receivable must be assessed and usually written off against income, because the future cash it relied on will not arrive. Termination fees may offset part of it. Discuss the treatment with your auditor, since the right entry depends on the agreement.
Should free rent be included in the straight-line calculation?
Yes. Free rent months are part of the lease term and are included as zero cash payments, so they lower the average monthly rent recognised across the whole term. Leaving them out would overstate income in later months and understate it at the start, which is exactly the distortion straight-lining is meant to remove.
How do I record the straight-line receivable in my books?
Each month, debit the straight-line receivable and credit rental income for the amount by which straight-line income exceeds cash rent, and reverse the direction when cash exceeds income. With RIOO in NetSuite these journals post automatically from the lease schedule, so the receivable balance always ties to each lease.
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