Finance category
Mortgage, loan, investing, tax, and money calculators.
Lease Co Terminus Gap Calculator
Matching lease expirations takes adjustments. This calculator sizes cost.
Adjustment cost
$32,400
Extension months needed
36
Concession value
$32,400
How the math works
Extension months = target − current term. Concession ≈ rent × extension × 5% typical rate cut.
Coterminus alignment is cheaper to do at renewal than mid-lease. Waiting until one lease is up for renewal to align others gives the landlord and tenant a natural negotiation window — mid-lease alignments usually cost 2-3x the renewal-window version.
How to Use
- Enter space A term months.
- Enter space B term months.
- Enter target coterminus months.
- Enter space A rent monthly.
- Enter space B rent monthly.
- Read coterminus adjustment cost.
Frequently Asked Questions
Why coterminus?
Tenant expanding into adjacent space wants same expiration. Portfolio manager aligning multiple leases for single renewal decision. Hospital/school consolidating campus. Each needs rate adjustment to align dates.
Adjustment mechanics?
Extend shorter lease: discount rent for extension months (concession). Shorten longer lease: buyout portion (premium). Extend with rate concession: typical approach. Buyout rare — usually better to extend short than shorten long.
Economics?
Rate concession of 3-8% typical for coterminus extension. Tenant gets matched dates; landlord gets certainty of rollover timing. Cost ~1 year of rent on extended portion. Usually worth it for operational simplicity.
Related Calculators
More Finance Calculators
Browse all finance →AI Cost Calculator
Compare token costs across OpenAI, Anthropic, and Google AI models. Calculate monthly API spending for GPT-4o, Claude, Gemini, and more.
Tip Calculator
Calculate the perfect tip and split the bill between friends. Choose preset percentages or enter a custom tip amount.
Bill Splitter Calculator
Split an uneven restaurant bill by item, divide tax and tip proportionally, and see exactly who owes whom.
Discount Calculator
Calculate sale price, discount amount, stacked discounts, sales tax, and total savings for any markdown.
Gas Mileage Calculator
Calculate MPG or km/L, estimate trip fuel cost, and compare annual fuel expenses between two vehicles.
Sales Tax Calculator
Add sales tax to a price, reverse-calculate the pre-tax amount from a total, and estimate tax for multiple items on one receipt.
Keep exploring