Lease Financials
Net Effective Rent vs Face Rent: Complete Guide with Calculations (2026)
By LeaseAI Team
March 21, 2026
20 min read
A landlord quotes you $50 per square foot per year. Your competitor just signed at $42 PSF down the street. Who got the better deal? You can't know until you calculate net effective rent. The face rate on a lease is a marketing number — net effective rent is the economic truth. This guide walks through exactly how to calculate both, why they differ, and how to use NER to compare deals and negotiate effectively.
10–40%
Typical gap between face rent and NER
$0
What "free rent months" add to face rent
$100K+
TI allowance value often omitted from rent comps
Face Rent vs Net Effective Rent: Definitions
Definition
Face Rent (Asking Rent / Headline Rent)
The stated base rent in a lease — typically expressed as annual dollars per square foot (PSF) or monthly dollars. This is the number quoted in marketing materials, on LoopNet, and in broker pitches. It represents the contractual rent rate before any concessions are applied. Also called "contract rent," "asking rent," or "headline rent."
Definition
Net Effective Rent (NER)
The economic average rent over the entire lease term, accounting for all concessions — free rent periods, tenant improvement allowances, moving allowances, and other incentives. Net effective rent represents what the tenant actually pays, on average, per month or per square foot over the life of the deal. It is always lower than face rent when concessions exist.
The conceptual difference is simple: face rent is what's written in the lease as the rate. Net effective rent is what you're actually paying after the landlord "gives back" value through concessions. Think of it like a car's sticker price vs. the price after rebates, trade-in credit, and dealer discounts — the number on the sticker and the number you actually pay are very different.
Why Landlords Quote Face Rent
Commercial real estate's entire market data infrastructure is built on face rent. CoStar, CBRE market reports, and broker comparable transactions are all quoted at face (asking) rent. This is not an accident — it serves landlord interests in several ways:
1. Preserving Market Comparables
If Building A is "asking $50 PSF" and the tenant signs at $50 PSF with 6 months free rent and a $100 TI allowance, the deal is recorded as a $50 PSF transaction. Future tenants see $50 PSF comps and accept $50 as the market rate — the landlord granted concessions to close the deal but preserved their position in market data.
2. Protecting Other Tenants' Rents
Existing tenants often have Most Favored Nations (MFN) clauses or know what their neighbors paid. If the landlord drops to $42 PSF face rent for a new tenant, existing tenants at $48 PSF will notice. By keeping face rent high and granting silent concessions, the landlord avoids triggering MFN issues or rent reduction demands from current tenants.
3. Marketing and Perception
A higher face rent makes the building appear more prestigious and in-demand. A landlord who drops their ask from $50 to $42 PSF signals a soft market. A landlord who maintains $50 PSF while giving deals signals confidence — even if the effective economics are identical.
What this means for tenants: When you see a market report saying "average office rents in this submarket are $45 PSF," those are face rents. The actual economics tenants are paying — the net effective rents — are often 15–30% lower. Don't accept face rent comps at face value. Ask your broker for effective rent comps.
Components of Net Effective Rent
A complete NER calculation accounts for all monetary flows between landlord and tenant over the lease term:
| Component |
How It Affects NER |
Direction |
| Base Rent |
Core payment — face rate in paying months |
Increases NER (tenant pays) |
| Rent Escalations |
Annual increases compound total cost |
Increases NER (tenant pays more over time) |
| Free Rent Period |
Months with $0 base rent reduce total paid |
Decreases NER (tenant saves) |
| Tenant Improvement Allowance |
Landlord pays for your build-out — reduces net cost |
Decreases NER (landlord subsidizes) |
| Moving Allowance / Signing Bonus |
Cash from landlord reduces effective cost |
Decreases NER (tenant receives cash) |
| Rent Credits |
Future rent reductions from negotiated credits |
Decreases NER |
| Operating Expenses (NNN/CAM) |
Additional costs beyond base rent |
Increases Total Effective Cost (separate from base NER) |
Important distinction: "Net effective rent" in its strictest definition typically refers to base rent after concessions — it does NOT include operating expenses (NNN/CAM/taxes/insurance). When comparing full service vs. NNN leases, calculate "total effective occupancy cost" instead — which includes both the NER and all operating expense obligations.
There are two common approaches to calculating net effective rent: the simple average method (easiest) and the present value / NPV method (most accurate).
Simple Average Method (NER Formula)
Net Effective Rent Formula (Simple)
NER = (Total Rent Paid − Value of Concessions) ÷ Total Lease Months
Where:
Total Rent Paid = Sum of all monthly base rent payments
Value of Concessions = Free rent value + TI allowance + other landlord incentives
Total Lease Months = Full lease term in months
Or equivalently:
NER per month = Total Gross Rent Payments / Lease Term Months
(where free rent months count as $0, TI is excluded from rent flow)
Note: There are two common approaches to handling the TI allowance in NER:
- TI-excluded method: Only count base rent payments (with free months as $0). Divide by total months. This gives you base NER without adjusting for TI.
- TI-included method: Subtract the TI allowance value from total rent paid before dividing. This gives the "all-in" NER that reflects the true economic exchange.
When comparing deals, use the same method for all deals. The TI-included method is more economically accurate but less commonly used in market reports.
Step-by-Step Calculation Examples
Example 1: Simple 5-Year Office Lease
Deal Terms
Space Size: 5,000 SF
Face Rent: $48 PSF/year ($20,000/month)
Lease Term: 60 months (5 years)
Free Rent: 3 months
Annual Escalation: 3% per year
TI Allowance: $75,000
Step 1: Calculate total rent paid by year
Year 1: $20,000 × 9 months paid = $180,000 (3 free months)
Year 2: $20,000 × 1.03 = $20,600 × 12 = $247,200
Year 3: $20,600 × 1.03 = $21,218 × 12 = $254,616
Year 4: $21,218 × 1.03 = $21,855 × 12 = $262,254
Year 5: $21,855 × 1.03 = $22,510 × 12 = $270,122
Total Rent Paid (60 months): $1,214,192
Step 2: Simple NER (base rent only)
NER = $1,214,192 ÷ 60 months = $20,237/month
NER PSF/year = $20,237 × 12 ÷ 5,000 = $48.57 PSF
Wait — that's HIGHER than face rent? Because of escalations.
Without escalations: ($20,000 × 57 months) ÷ 60 = $19,000/month = $45.60 PSF NER
Step 3: TI-Adjusted NER
TI Amortized per month: $75,000 ÷ 60 = $1,250/month
Adj NER = $20,237 − $1,250 = $18,987/month
Adj NER PSF/year = $18,987 × 12 ÷ 5,000 = $45.57 PSF
Face Rent: $48.00 PSF
Base NER (with escalations): $48.57 PSF (escalations dominate)
TI-Adjusted NER: $45.57 PSF
True discount vs. face: 5.5%
Example 2: Comparing Two Competing Deals
Deal A vs Deal B — Which Is Better?
DEAL A:
Face Rent: $52 PSF/year | Size: 10,000 SF
Free Rent: 6 months | Term: 60 months
TI: $200,000 | Escalation: 3%/yr
Total months paying: 54
Base rent: $43,333/month
Year 1 (6 free + 6 paying): $43,333 × 6 = $260,000
Year 2: $43,333 × 1.03 × 12 = $535,996
Year 3: $44,633 × 1.03 × 12 = $551,876
Year 4: $45,972 × 1.03 × 12 = $568,426
Year 5: $47,351 × 1.03 × 12 = $585,479
Total rent: $2,501,777
TI credit: $200,000
Adj total: $2,301,777
Adj NER/month: $2,301,777 ÷ 60 = $38,363
NER PSF/yr: $38,363 × 12 ÷ 10,000 = $46.04 PSF
DEAL B:
Face Rent: $44 PSF/year | Size: 10,000 SF
Free Rent: 0 months | Term: 60 months
TI: $50,000 | Escalation: 3%/yr
Month 1 rent: $36,667/month
Year 1: $36,667 × 12 = $440,000
Year 2: $36,667 × 1.03 × 12 = $453,200
Year 3: $37,767 × 1.03 × 12 = $466,796
Year 4: $38,900 × 1.03 × 12 = $480,800
Year 5: $40,067 × 1.03 × 12 = $495,224
Total rent: $2,336,020
TI credit: $50,000
Adj total: $2,286,020
Adj NER/month: $2,286,020 ÷ 60 = $38,100
NER PSF/yr: $38,100 × 12 ÷ 10,000 = $45.72 PSF
RESULT:
Deal A NER: $46.04 PSF (face rent: $52 PSF)
Deal B NER: $45.72 PSF (face rent: $44 PSF)
Deal B is slightly better despite the big face rent gap
This example illustrates the key insight: a $52 face rent deal with heavy concessions can be nearly identical to a $44 face rent deal with minimal concessions. You can only see this by calculating NER — never by comparing face rents.
Comparing Competing Lease Offers
When evaluating multiple spaces, use NER as your primary comparison metric. Here's a side-by-side comparison framework:
| Metric |
Deal A |
Deal B |
Deal C |
| Face Rent (PSF/yr) |
$52 |
$44 |
$48 |
| Term (months) |
60 |
60 |
84 |
| Free Rent (months) |
6 |
0 |
9 |
| TI Allowance |
$200K |
$50K |
$350K |
| Escalation (%/yr) |
3% |
3% |
2.5% |
| NER (PSF/yr) |
$46.04 |
$45.72 |
$42.80 |
| Total 5-yr Cost |
$2.30M |
$2.29M |
$3.01M (7-yr) |
Deal C (the longest term) shows the lowest NER because the large TI allowance and 9 months of free rent are amortized over 84 months instead of 60. However, total cost is highest — and you're locked in for 7 years. NER is the right tool for comparing cost efficiency; total cost tells you absolute exposure.
Should You Use NPV Instead of Simple NER?
The simple NER method treats all dollars equally regardless of when they're paid. A financially rigorous approach uses Net Present Value (NPV) to discount future cash flows — recognizing that a dollar paid 5 years from now is worth less than a dollar paid today.
When Simple NER Is Good Enough
- Deals up to 5–7 years with modest escalations
- Quick comparisons between similar deals
- When you need an easily communicable number
When NPV Is Worth the Effort
- Deals over 10 years
- High-value deals over $10M total rent
- When comparing deals with very different payment schedules (e.g., step rents vs. flat rent)
- When the time value of money is a critical factor for your business
NPV-Based Effective Rent (Simplified)
Discount Rate: 6% per year (0.5% per month)
Deal: $20,000/month, 60 months, 3 months free
PV of payments (months 4–60) using discount rate:
PV = Σ [PMT / (1+r)^t] for t = 4 to 60
PV ≈ $891,200 (vs. undiscounted $1,140,000)
NPV-based monthly equivalent = $891,200 / 60 = $14,853/month
vs. simple NER of $19,000/month
The NPV approach accounts for the time value of back-loaded payments.
Using NER in Market Analysis
When analyzing a market, understanding the relationship between face rent and NER tells you a lot about market conditions:
- Large face-to-NER spread (25%+): Indicates a soft market. Landlords are desperate for tenants and granting heavy concessions while maintaining face rents for reporting purposes. Tenants have significant negotiating leverage.
- Small face-to-NER spread (5-10%): Indicates a tight market. Minimal concessions available. Landlords can maintain both face rent and effective rent because demand exceeds supply.
- Converging spread: When the gap between face rent and NER is shrinking, the market is tightening — act now before concessions disappear.
- Widening spread: Market softening — leverage is shifting toward tenants even if face rents appear stable.
How to Use NER in Negotiations
As a Tenant
Lead with NER, not face rent. When a landlord says their face rent is $50 PSF and "that's the market," respond with: "I understand the face rent. What I care about is net effective rent — the all-in economic cost. Comparable spaces I'm looking at have NERs of $38–42 PSF. That's the range I need to be in." This shifts the conversation from a headline number to economic substance.
Use NER to back-solve for needed concessions. If you need an NER of $40 PSF but the landlord insists on a $50 PSF face rent, you can calculate exactly how much TI allowance and how many months of free rent you need to reach your target NER.
Back-Solving for Required Concessions
Target NER: $40 PSF/yr ($33,333/month for 10,000 SF)
Face Rent: $50 PSF/yr ($41,667/month)
Term: 60 months
Escalation: 3%/yr
Total rent at face rate (5 yrs, 3% esc): $2,673,000
Target total (NER × months): $33,333 × 60 = $2,000,000
Required concessions: $2,673,000 − $2,000,000 = $673,000
Possible structures to reach $673K concession:
Option A: 6 months free ($250,000) + $423,000 TI
Option B: 9 months free ($375,000) + $298,000 TI
Option C: 12 months free ($500,000) + $173,000 TI
As a Landlord (If You're on the Other Side)
Understanding NER helps you evaluate whether a proposed concession package is economically competitive. If your building's achievable NER is below the market minimum, either your face rent is too high or your concession package is insufficient. NER analysis gives you a rational basis for adjusting your offer instead of reacting to intuition.
NER Calculation Checklist
- Collect all base rent amounts for each year of the lease term
- Identify all escalation schedules — fixed percentages, CPI-linked, or step rents
- Identify the exact free rent period — number of months and which months (beginning, middle, or end of term)
- Note whether CAM/NNN charges apply during free rent months (they often do)
- Obtain the TI allowance amount and determine if it's above-standard or below-market
- Identify any moving allowance, signing bonus, or other landlord incentives
- Calculate total base rent payments across all paying months (including escalations)
- Divide total base rent by total lease months (including free months) for simple NER
- For TI-adjusted NER: subtract TI allowance from total rent before dividing
- Convert monthly NER to annual PSF for comparison with other deals
- For total occupancy cost comparison: add NNN/CAM obligations to NER
- Compare all competing deals using the same NER calculation methodology
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NER and Lease Renewals
Net effective rent is equally important in lease renewals — and often more complex, because renewal options rarely include the same concessions as new leases. When evaluating a renewal, compare:
- The renewal NER (typically just the face rate × escalation, with minimal or no concessions)
- A new lease NER at a comparable space (which includes concessions)
- The cost of relocating (moving costs, fit-out costs, disruption costs)
A renewal at $52 PSF with no concessions may have an NER of $52 PSF. A move to new space at $55 PSF face with 6 months free and $200K TI may have an NER of $45 PSF — making the "more expensive" option actually cheaper on a net effective basis.
This is why tenants who never calculate NER often stay in spaces that are economically inferior to available alternatives — they're comparing face rates and concluding they can't afford to move.
Frequently Asked Questions
What is the difference between face rent and net effective rent?
Face rent is the stated rent rate in the lease — before any concessions. Net effective rent (NER) is the average monthly economic cost when all concessions (free rent, TI allowance, moving allowances) are factored in. NER is always lower than face rent when concessions exist.
How do you calculate net effective rent?
Simple method: sum all base rent paid over the full lease term (free months count as $0). Divide by total lease months. For TI-adjusted NER: subtract the TI allowance from total rent before dividing. The result is average monthly cost, which you can convert to annual PSF for comparison.
Why do landlords quote face rent instead of net effective rent?
Face rent is the "market rate" that appears in comparable transactions and market reports. Quoting face rent preserves the landlord's position in market data and protects existing tenants from demanding rent reductions. Concessions (free rent, TI) are given privately to close deals without lowering the face rate.
Should I compare commercial leases using face rent or NER?
Always use NER. Comparing face rents across deals with different concession packages is like comparing car sticker prices without knowing what rebates each buyer got. NER is the only number that allows true economic comparison between competing lease options.
What is included in a net effective rent calculation?
Base rent across all lease years (accounting for escalations), free rent months (counted as $0), TI allowance (subtracted from total rent), moving allowances and signing bonuses. Operating expenses (NNN/CAM) are usually tracked separately as "total occupancy cost" rather than included in base NER.
What is a typical spread between face rent and net effective rent?
10–40% depending on market conditions. Soft markets (high vacancy, tenant-favorable) typically show 20–40% spreads. Tight markets show 5–15% spreads. The spread is a barometer of market conditions — a widening spread signals softening even when face rents appear stable.
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