Gain to lease is the amount by which in-place contract rent sits above current market rent. It is the mirror of loss to lease. Where loss to lease measures recoverable upside, gain to lease measures rent that is likely to roll down at renewal, because sitting tenants will not renew above what the market now charges.
How Gain to Lease Works
Gain to lease is calculated by subtracting current market rent from the actual in-place rent, per unit or summed across a property. The per-unit formula is Gain to Lease = In-Place Rent - Market Rent. As a percentage it is (In-Place Rent - Market Rent) / Market Rent. A positive result means the tenant pays above market; a negative result is loss to lease.
Per Wall Street Prep, when actual rent charged to a tenant exceeds the market rate, the difference is a gain to lease, the inverse of the loss-to-lease case where in-place rent falls below market. The figure appears on a rent roll wherever a lease was signed when market rents were higher than they are today, then market conditions softened while that lease stayed in force at its original rate.
Input | Definition |
|---|---|
In-place rent | The contract rent the sitting tenant currently pays |
Market rent | The rent the unit would achieve if leased today at prevailing rates |
Gain to lease | In-place rent minus market rent, per unit or summed across units |
Gain to lease percent | (In-place rent minus market rent) divided by market rent |
Gain to lease shows up most often after a rent cycle turns. Leases signed at a peak stay fixed while new market rents drift lower, so the property collects above-market income until each lease expires and resets.
Why Gain to Lease Matters
Gain to lease matters because it is a warning that in-place rents will roll down, not a source of durable income. It inflates today's revenue and can flatter a trailing-twelve-month income statement, but the premium disappears as leases turn. An underwriter who capitalizes it as stabilized income overstates net operating income and, at a market cap rate, the value.
The operator-side discipline is to strip gain to lease out of forward rent. Adventures in CRE frames the same point in reverse: underwriting reconciles in-place rent to market rent so the pro forma reflects what leases will reset to, not what they currently collect. A property showing gain to lease should be underwritten to declining rents at each renewal, with the premium treated as temporary.
Example
A 100-unit property signed leases at a market peak of $1,600 per unit. Market rent has since softened to $1,500. Every occupied unit now sits $100 above market, a gain to lease of $100 per unit, $10,000 per month, or $120,000 per year at full occupancy. That premium is not stabilized income; it is scheduled to reverse.
Component | Amount |
|---|---|
In-place rent per unit (monthly) | $1,600 |
Market rent per unit (monthly) | $1,500 |
Gain to lease per unit (monthly) | $100 |
Units | 100 |
Total gain to lease (monthly) | $10,000 |
Total gain to lease (annual) | $120,000 |
The gain to lease percentage is $100 / $1,500, or 6.7% above market. If leases turn evenly and half renew each year, roughly $60,000 of that premium rolls off in year one as those tenants reset to $1,500, with the balance following as the rest expire. Underwriting to current rents removes the full $120,000 from stabilized revenue.
Variations and Edge Cases
Gain to lease behaves differently depending on lease structure and how honestly market rent is marked. A high headline gain can be benign if leases are short and resets are already priced in, or dangerous if long leases hide a premium that a buyer inherits. The table below covers the cases an underwriter should confirm before trusting in-place revenue.
Variant | Treatment |
|---|---|
Soft or falling market | The most common source; peak-signed leases sit above a lower current market |
Long lease terms | A large premium locked in for years defers the roll-down but does not remove it |
Understated market rent | Marking market rent too low manufactures a gain to lease that is not real |
Escalation clauses | Contractual bumps can push in-place rent above a flat market over a lease term |
Renewal timing | Only leases expiring in the period reset; the rest hold the premium temporarily |
The common mistake is reading gain to lease as strength. It is above-market income with an expiration date. The quotable rule for an operator is simple: loss to lease is upside you can capture, gain to lease is income you are about to lose.
Gain to Lease vs Loss to Lease
Gain to lease is often confused with loss to lease, and they point in opposite directions. Gain to lease is in-place rent above current market rent, a signal that revenue will decline as leases reset lower. Loss to lease is in-place rent below current market rent, a signal of recoverable upside as leases renew higher. One is downside risk; the other is embedded upside.
Both are measured against the same market rent assumption, which makes that assumption the number to defend. Marking market rent too high converts a real gain to lease into a phantom loss to lease and hides downside. An underwriter reconciles in-place rent to a defensible market rent before crediting either upside or income.
Frequently Asked Questions
How do you calculate gain to lease? Gain to lease is in-place rent minus current market rent. Per unit, subtract the market rent from the contract rent the tenant pays. As a percentage, divide that gap by market rent, so a unit renting at $1,600 against a $1,500 market shows a 6.7% gain to lease.
Is gain to lease good or bad? Gain to lease raises current income but signals downside, because above-market leases are likely to reset lower at renewal. It is a warning sign in underwriting, not durable upside, and it should be stripped out of stabilized revenue rather than capitalized.
What is the difference between gain to lease and loss to lease? Gain to lease means in-place rent sits above market, so revenue rolls down at renewal. Loss to lease means in-place rent sits below market, so revenue can be raised at renewal. Gain to lease is downside risk; loss to lease is recoverable upside.