Ibravra is the decision engine and digital knowledge hub for modern founders, operators, and cross-border businesses. We publish research-backed incorporation guides, interactive financial tools, and head-to-head software reviews.

Are Ibravra business tools and calculators free to use?

Yes, all interactive financial calculators, invoice generators, and business launch checklists are 100% free with no registration or credit card required.

How does Ibravra verify software reviews and guides?

All IBRAVRA content follows our strict Editorial Constitution and Post-AI Value Rule, requiring real practitioner experience, primary source statutory checks (IRS/FinCEN), and verifiable benchmarks.

Is a triple-net lease always cheaper than a gross lease?

No. A triple-net lease has a lower base rent, but the tenant pays taxes, insurance, and CAM on top. On the running-case inputs — $25 base plus $10 pass-throughs against a $32 all-in gross rate — the gross lease costs $1,250 a month less on 5,000 square feet. The cheaper structure is whichever has the lower total occupancy cost on the actual quotes.

What does a tenant improvement allowance actually cover?

The landlord's contribution toward fitting the space to the tenant's business: walls, finishes, fixtures, and cabling, usually quoted per square foot. Reported allowances run $10 to $80 per square foot by asset class. The lease should state what the allowance covers, when it is paid, who hires the contractor, and what happens to the improvements when the lease ends.

Can an SBA loan buy a building the business will rent out?

Not as an investment. A 504 loan cannot be used for speculation or investment in rental real estate, and 13 CFR 120.131 requires the borrower to occupy at least 51 percent of an existing building or 60 percent of new construction. Up to 49 percent of an existing building may be leased to other tenants.

Is rent fully deductible?

Rent for property used in the trade or business is deductible under 26 U.S.C. § 162(a)(3), provided the taxpayer has not taken title and has no equity in the property. Payments under an agreement that is really a conditional sale are not deductible as rent. IRS Publication 535, the old reference for these rules, was discontinued after its 2022 revision; the rent topic now maps to Publication 334.

How long does it take for buying to beat leasing?

On the running-case inputs — a $1,000,000 purchase at 10 percent down, a 25-year mortgage at 7.50 percent, against a $25 triple-net lease with $10 pass-throughs — buying pulls ahead in year three on pure cash and in year two when principal repaid is credited as equity. The answer is driven by the reader's own price-per-square-foot and rent-per-square-foot inputs, so rerun it with the actual quotes.

What is the single most important clause to negotiate on a net lease?

The cap on controllable operating expenses, usually 4 to 5 percent a year on a cumulative basis, paired with the right to audit the landlord's CAM reconciliation. Without the cap, the pass-through line can grow without limit; without the audit right, the tenant cannot check what was passed through.

Comparisons • 12 min read

Commercial Lease vs Buy: The Office Space Playbook

A $25 per square foot quote can mean $10,417 a month or $14,583 a month depending on three words after the number. This playbook prices both sides of the occupancy decision with the statutes and the arithmetic on the table.

By Enow A. Jovial • Published 2026-11-11

Commercial Lease vs Buy: The Office Space Playbook

A founder signs a five-year lease for 5,000 square feet at $25 per square foot, budgeting $10,417 a month. The first invoice is $14,583. The extra $4,166 is the triple-net pass-through — taxes, insurance, and common-area maintenance — carried in three letters after the rate. The same founder could have bought a comparable building for $100,000 down and a $6,651 monthly mortgage. Both numbers were available before signing.

This guide is for an owner-operator choosing a home for a business that needs real office space: a team that meets clients in person, a lease term of three years or more, and a budget that must survive the term. It is not for a solo operator who can work from home, a business that needs space for less than a year, or anyone shopping for an investment property. The buy side here is owner-occupied space only — the only kind the Small Business Administration will finance. The entity holding the building changes the annual cost — see the Delaware vs Wyoming vs Nevada LLC annual compliance cost playbook.

The quoted rent is never the occupancy cost. On a triple-net lease the real monthly number is base rent plus pass-throughs plus the build-out gap the tenant improvement allowance does not cover — and on the buy side it is the mortgage plus operating costs minus the principal the business keeps as equity.

The three lease structures: who pays for what

Every commercial office lease is a variation on three structures, and the difference turns on one question: who pays the building's operating expenses — property taxes, building insurance, and common-area maintenance — on top of the rent?

In a gross lease, the tenant pays one flat rate and the landlord covers operating costs out of it. In a triple-net lease, written NNN, the tenant pays a lower base rent plus a share of all three costs. In a modified-gross lease the split is negotiated; the common form is the base-year stop, where the landlord covers a Year 1 baseline and the tenant pays only the increases above it in later years.

Structure	Base rent	Who pays taxes, insurance, CAM	Typical setting	Authority
Gross (full-service)	Highest; one all-in rate	Landlord, from the rent	Multi-tenant office	Cauble Group lease guide, 2020
Triple-net (NNN)	Lowest base; pass-throughs on top	Tenant, as a share of the three costs	Retail, single-tenant, industrial	Cauble Group lease guide, 2020
Modified gross	Middle; base-year stop common	Negotiated split; tenant pays increases above Year 1 baseline	Class B office, flex space	Cauble Group lease guide, 2020; Timm Clarke Commercial Leasing 101

No statute fixes these definitions. A lease labelled triple-net in one building can assign different responsibilities from the same label in another. The lease text controls. Never compare two quotes by the headline rate alone — compare total occupancy cost, the only number that clears the bank account.

Lease structures, pass-through ranges, and TI allowances

What a quote actually costs: the monthly math at three sizes

\text{Monthly cost} = \frac{\text{Rate per sq ft per year} \times \text{Square feet}}{12}

The inputs are stated assumptions, not market quotes: a triple-net base rent of $25 per square foot per year with $10 of pass-throughs, and a full-service gross rate of $32. The $10 pass-through sits inside the guide's $5 to $15 range, and $32 is its fully loaded example. Replace them with your own quotes and rerun the arithmetic.

Space	NNN monthly: ($25 + $10) per sq ft	NNN annual	Full-service gross monthly: $32 per sq ft	Gross annual
2,000 sq ft	$5,833	$70,000	$5,333	$64,000
5,000 sq ft	$14,583	$175,000	$13,333	$160,000
10,000 sq ft	$29,167	$350,000	$26,667	$320,000

The gross lease is cheaper per month at every size here — $500 a month cheaper at 2,000 square feet, $1,250 at 5,000 — because a $32 all-in rate beats a $35 all-in triple-net rate. $25 looks cheaper than $32 until the pass-throughs land. The gap scales with size: at 10,000 square feet the structure choice is a $2,500 monthly decision.

\text{NNN base: } \frac{\$25 \times 5{,}000}{12} = \$10{,}417 \text{ per month}

\text{NNN pass-throughs: } \frac{\$10 \times 5{,}000}{12} = \$4{,}167 \text{ per month}

\text{Total NNN monthly occupancy: } \$10{,}417 + \$4{,}167 = \$14{,}583

\text{Gross monthly occupancy: } \frac{\$32 \times 5{,}000}{12} = \$13{,}333

The $1,250 monthly gap is the price of the risk transfer. Under gross the landlord absorbs tax and insurance spikes; under triple-net the tenant does. A tenant who chooses triple-net should insist on two protections the guide names as the single biggest tenant safeguard: a cap on controllable operating expenses — everything except taxes and insurance — usually 4 to 5 percent a year on a cumulative basis, and the right to audit the landlord's CAM reconciliation each year.

Tenant improvements and free rent: the money before month one

The build-out is the second place a lease quote hides money. A tenant improvement allowance, or TI allowance, is money the landlord contributes toward fitting the space usually quoted per square foot. The Cauble Group guide reports TI allowances of $10 to $80 per square foot by asset class, and free-rent periods of one to six months as common.

Take the running case: a 5,000-square-foot build-out at $60 per square foot, or $300,000. A TI allowance of $40 per square foot — inside the reported range — covers $200,000. The tenant funds the remaining $100,000 — $1,667 a month over a 60-month term, cost absent from the rent quote:

\text{Tenant build-out gap} = \$300{,}000 - \$200{,}000 = \$100{,}000

\text{Gap per month over 60 months} = \frac{\$100{,}000}{60} = \$1{,}667

Three months free on a 60-month triple-net term saves three months of the $14,583 monthly cost, or $43,750. Free rent is not free space: the landlord recovers it through the rate, the term, or the TI allowance. Compare offers on effective rent — total cash paid over the term, including the build-out gap, divided by the number of months.

A personal guaranty puts the owner's own assets behind the lease if the business cannot pay. Landlords frequently ask a newer business for one. It is negotiable: push for a limited guaranty, a burn-off that ends after a set period of on-time payment, or a cap tied to a number of months' rent.

Escalation clauses: the rent in year ten

Commercial leases run long — three to ten years is typical. Escalations raise the rent each year by a fixed percentage or by an index, and a few points a year compounds into a very different number by year ten.

On the running case, a 3 percent annual escalation lifts the $25 base rate to $32.62 per square foot by year ten. The monthly base rent on 5,000 square feet rises from $10,417 to $13,591, and with the $10 pass-through held flat the total reaches $17,758 a month — $3,175 more than year one, Over five years the triple-net lease costs $913,642, an effective $15,227 a month, and $14,498 a month once three months of free rent are credited.

\text{Year 10 base rent} = \$25 \times (1.03)^{9} = \$32.62 \text{ per sq ft}

\text{Year 10 monthly base} = \frac{\$32.62 \times 5{,}000}{12} = \$13{,}591

\text{Year 10 total monthly} = \$13{,}591 + \$4{,}167 = \$17{,}758

Three clauses deserve a line-by-line read: escalation, renewal, and assignment and subletting.

The buy side: SBA financing and the occupancy rule

Buying means the business pays a mortgage instead of rent, and the Small Business Administration is the usual small-business route. The 504 loan provides long-term, fixed-rate financing for major fixed assets, with a maximum of $5.5 million, repayment terms of 10, 20, and 25 years, through Certified Development Companies only. The 7(a) loan carries a maximum of $5 million and can also fund real estate purchases. A 504 loan cannot be used for working capital or inventory, or for speculation or investment in rental real estate. If the purchase needs debt beyond the mortgage, price the alternatives in the business line of credit vs term loan vs invoice factoring playbook.

SBA 504 loan terms: $5.5 million maximum, 10, 20 and 25 year maturities

The occupancy rule decides whether the SBA will finance the purchase. Under 13 CFR 120.131, a borrower buying an existing building must occupy no less than 51 percent of the rentable property and may permanently lease up to 49 percent to other tenants. For new construction the bar is higher: the borrower must occupy no less than 60 percent, may lease up to 20 percent, and must plan to occupy the rest within three years and all of it within ten years.

13 CFR 120.131 occupancy rules: 51 percent existing, 60 percent new construction

The buy-side math uses stated model assumptions: a 5,000-square-foot building bought at $200 per square foot, or $1,000,000; a 10 percent down payment of $100,000; a $900,000 loan amortised over 25 years at a 7.50 percent annual rate; and operating costs of $10 per square foot per year, or $50,000 a year, held flat. Rerun the formula with your lender's rate.

\text{Monthly payment} = P \times \frac{r(1+r)^{n}}{(1+r)^{n}-1}

\text{Monthly payment} = \$900{,}000 \times \frac{0.00625(1.00625)^{300}}{(1.00625)^{300}-1} = \$6{,}651

The $6,651 monthly mortgage is less than half the $14,583 triple-net rent. Run the same comparison on your own quotes with the business loan calculator. Add the $50,000 of operating costs and the buy side comes to $129,811 a year, or $10,818 a month — still $3,766 a month below year-one rent. Year-one interest is $67,068 and year-one principal repaid is $12,743 — equity the business keeps — leaving a balance of $887,257.

The tax split: rent deducted now, buildings depreciated slowly

The tax treatment is the sharpest structural difference. Under 26 U.S.C. § 162(a)(3), a business may deduct rentals required as a condition to the continued use or possession, for purposes of the trade or business, of property to which the taxpayer has not taken title or in which he has no equity. Rent for space the business uses is deductible in the year it is paid or accrued.

The owner gets a slower benefit. A purchased building is capitalised and depreciated, not deducted. Under 26 U.S.C. § 168, nonresidential real property carries a 39-year recovery period. On the running case, with land taken at 20 percent of the $1,000,000 price, the depreciable basis is $800,000 and the annual depreciation is $20,513:

\text{Annual depreciation} = \frac{\$800{,}000}{39} = \$20{,}513

Section 179 softens the edge for the contents, not the shell: a taxpayer may elect to expense qualifying property up to $2,500,000, phasing out once section 179 property placed in service in the year exceeds $4,000,000. The building itself does not qualify.

One citation trap to avoid: IRS Publication 535, Business Expenses, was discontinued by the IRS — the last revision was for 2022 — and its rent-expense topic now maps to Publication 334, Tax Guide for Small Business.

IRS guide: Publication 535 discontinued, rent expense now in Publication 334

Founder & CEO Insight — Enow A. Jovial

I have watched founders pick a lease by the headline rate and then spend five years paying for the three letters after it. The occupancy decision is never about rent versus mortgage. It is about control: a lease buys the right to leave, a purchase buys the right to stay and the obligation to pay for everything that breaks.

— Enow A. Jovial, Founder & Chief Executive Officer

The break-even year: when buying pulls ahead

The break-even question has two honest answers. On a pure cash basis — down payment plus mortgage payments plus operating costs, with no credit for equity — the buy side costs $229,811 in year one against $175,000 of lease cost, trails by $5,872 at the end of year two, and crosses ahead in year three, when buy cash of $489,433 falls below lease cash of $536,362. Crediting principal repaid as equity kept, the buy side pulls ahead in year two: $333,146 against $353,750.

Year	Cumulative lease cost	Cumulative buy cash (no equity credit)	Cumulative buy net (principal credited)
1	$175,000	$229,811	$217,068
2	$353,750	$359,622	$333,146
3	$536,362	$489,433	$448,159
5	$913,642	$749,055	$674,648
10	$1,932,985	$1,398,110	$1,215,568

By year ten the gap is wide: $1,932,985 of lease cost against $1,215,568 net buy cost, a $717,417 difference on the stated inputs. The result turns on the price-to-rent ratio: double the purchase price to $400 with the same rent and the buy side's monthly cost passes the rent.

Run the break-even twice: once on pure cash, once crediting principal repaid. If the two answers are years apart, the down payment is driving the decision.

Execution checklist: from first tour to signature

Measure the real need: headcount for the next three years, client-facing space, storage, and parking, then convert it to a square-foot range.
Collect three quotes in writing, each stated as base rent, pass-throughs, and total monthly occupancy cost.
Price the build-out: get a contractor's number, subtract the written TI allowance, and add the gap to the monthly cost over the term.
Model the escalation: run the year-ten rent at the clause's own rate and check the business can carry it.
Read the guaranty, renewal, assignment, and subletting clauses line by line, and mark the renewal notice deadline on the calendar.
If buying, confirm SBA eligibility and the occupancy rule before ordering the appraisal.
Get the lender's actual rate and rerun the mortgage formula; never sign on the model's assumed rate.
Have an attorney review the agreement and a CPA confirm the tax treatment.

Operational checklist

[x] Total monthly occupancy cost computed from base rent plus pass-throughs, not the headline rate
[x] TI allowance confirmed in writing: coverage, payment timing, contractor
[x] Controllable opex cap of 4 to 5 percent a year requested on any net lease
[x] CAM audit right written into the lease
[x] Escalation clause modelled to year ten at the stated rate
[x] Free rent credited in the effective-rent calculation
[x] Personal guaranty limited, capped, or given a burn-off date
[x] Renewal notice deadline on the calendar
[x] SBA occupancy percentage confirmed before the appraisal
[x] Depreciation schedule and section 179 position confirmed with the CPA