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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.
EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.
Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.
Learn more about our review process on the EveryCalc methodology page.
How this calculator works
What this page estimates
This Lease Co Terminus Gap Calculator is built to give a quick, browser-based estimate for lease co terminus gap. Matching lease expirations takes adjustments. This calculator sizes cost. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.
Calculation approach
The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.
Example workflow
For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.
Practical checks
- Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
- Run a low, base, and high case when the inputs are estimates.
- Check the related calculators below when the next decision depends on a different assumption.
How to interpret the lease co terminus gap result
Best use
Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.
Cross-check
Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.
Watch for
Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.
This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.
Before relying on this lease co terminus gap estimate
Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.
Confirm source numbers
Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.
Separate cash flow from total cost
A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.
Run conservative cases
Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.
Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.
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.
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