Expense Stop Shortfall Calculator

Expense stops shift operating cost risk between landlord and tenant.

Expense stop / sqft

Actual expense / sqft

Tenant SF

Total SF

Landlord shortfall

$10,000

Landlord absorbed per tenant

$110,000

Shortfall per SF

How the math works

Shortfall = max(0, stop − actual). Per tenant = shortfall per SF × tenant SF.

$6 stop − $5.50 actual = $0.50/sqft × 20k SF = $10k landlord absorbed below tenant floor.

How to Use

Enter annual expense stop floor.
Enter actual operating expense per sqft.
Enter tenant square footage.
Enter building total SF.
Read landlord shortfall.

Frequently Asked Questions

What is an expense stop?

A clause in commercial leases where tenant pays their pro-rata share of operating expenses ABOVE a negotiated 'stop' (floor). Landlord absorbs expenses up to the stop; tenant pays pro-rata share of expenses above. Common in office leases. Typically set at base year (first year of lease) operating expense per SF — protects tenant from inflation but gives landlord a baseline recovery. Stops get 'grossed up' to 95% occupancy to prevent tenant benefit from low-occupancy periods.

Expense stop vs NNN?

NNN (triple-net): tenant pays ALL operating expenses pro-rata. No landlord subsidy. Stop lease: landlord pays base-year expenses; tenant pays incremental increases. Gross lease: landlord pays everything, tenant pays fixed rent. Stop is middle ground — common in Class A/B office. Commercial landlord preference: NNN (simplest, no absorption). Tenant preference: stop or gross (protection against spikes). Negotiated based on market and size.

Why stops matter?

If base-year expenses are $6/sqft and tenant occupies 20k sqft, landlord absorbs $120k/yr in expenses. In a 500k sqft building with 25 tenants, landlord absorbs $3M/yr before tenant pass-through kicks in. That's $3M less NOI than NNN structure. This is why shorter stop periods (1-year stops preferred by landlords) and grossed-up stops matter so much.

Typical negotiation levers?

Stop period: 1-year (landlord-favored) vs base-year-indexed (tenant-favored). Gross-up: to 95% (landlord-favored) vs actual occupancy (tenant-favored). Excluded items: capital expenditures (both exclude), cosmetic items (negotiable), utilities (sometimes direct-metered). Pro-rata calculation method: net rentable SF (landlord) vs gross leased SF (tenant). Each detail impacts millions over lease term. Experienced counsel worth 10x their fees.