By Janet Portman , Attorney Santa Clara University School of Law
Updated by Amanda Hayes , Attorney University of North Carolina School of Law
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A property's tax bill is calculated by multiplying the local tax rate by the property's assessed value. Depending on where the property is located, you might have a city (or town) and county tax rate applied to the property's bill. You might also see additional fees, such as police department, fire department, and solid waste costs.
Sometimes the tax rate is shown as a percentage. For example, suppose the county tax rate is 2%. If your property is worth $200,000, then your tax bill will be $4,000, or 2% of $200,000.
Other times, the tax rate is shown as a fraction of a dollar per every $100 of your property's assessed value. For instance, suppose your county tax rate is $0.65 per $100 of your property's value, and your property is assessed to be worth $100,000. So, you would owe 65 cents for every $100 your property is worth. To calculate your tax bill, you'd divide your property's value by 100 and multiply that number by 0.65. So your tax bill would be $650, or $100,000/100 x 0.65.
You can check with your city or county's tax office to find out how your tax bill is calculated.
If you're going to be the landlord's sole renter, it won't be hard to allocate the tax burden between the two of you. Depending on who has the superior bargaining position, either you'll get stuck with:
While taxes can be divided multiple ways between the landlord and tenant, there are two methods often used—sometimes together—in triple net leases.
A common way to place tax responsibility on the tenant is for the landlord to agree to pay all real property taxes for the first year of the lease (sometimes called the "base year"). Then, after the first year, you pick up all or a portion of any increase in the property tax.
For example, suppose Spartan Enterprises leases a small building from Urban Developers for five years. The lease says that in years two through five of the lease, Spartan will pay 50% of any increase in real property taxes beyond the first year amount.
Taxes are $3,000 for year one and are paid entirely by Urban. In year two, taxes go up to $3,300. Spartan owes $150 in real property taxes in year two (50% of the $300 increase). Urban pays the remaining $3,150.
A landlord might, however, ask you to pay for more than just the tax increases. You could be asked to pay for all real property taxes, or to split real property taxes 50/50 with the landlord. A shrewd landlord could also set the base year several years in the past—when the tax bill was lower than it is now—so that you immediately begin paying the increase.
If you're going to pay all or a part of the landlord's real property taxes, it's important that the lease clause specify that you'll pay according to your percentage of the property's total rentable space—not the space that happens to be rented when you sign your lease.
If you pay according to the total space that happens to be rented at the time, you can end up paying an enormous portion of the tax bill if there are significant vacancies in the building.
For instance, suppose California Sew and Vac rented 2,000 square feet of the total rentable area of 10,000 square feet in Larry Landlord's building. Sadly for Larry, only half of the total space (5,000 square feet) is actually rented out. Sew and Vac has a triple net lease that obligates it to pay for a portion of Larry's property taxes.
There are two ways to compute Sew and Vac's portion of the taxes:
You can see why a landlord would prefer to base your tax responsibility on the rented—not rentable—area of the building. Under the first system, the landlord will pass the risk of an empty building onto the tenants—whoever's there will divide the bill among themselves. Under the second system, however, the landlord will pay taxes for the unrented space.
If you see (or expect) significant chunks of vacant space in the building, try hard for a lease clause that bases your share of taxes on the building's rentable space. If it's a hot property with vacancies unlikely and apportionment is based on rented space, you won't have much to worry about.
When you negotiate the lease, ask to see the landlord's property tax bill for the preceding year. If you're asked to pay all or a portion, you'll know the amount—for now. But it's not likely to remain static. The tax amount could rise because:
For these reasons, it's great to get a binding promise that you'll be excused from paying taxes over a stated amount. This guarantee will protect you from additional taxes if a reassessment or building sale results in higher taxes.
In a multitenant building, many tenants can share the tax burden. In a property with other tenants, you might have neighbors who've put in expensive, value-adding improvements, such as:
(Improvements are permanent additions to the landlord's property, as opposed to trade fixtures that tenants usually remove when the tenancy ends.)
You, on the other hand, might end up adding little or nothing to the value of the property when you move in, asking only for a new carpet, paint, and some special lighting. What's the problem?
Your landlord's real estate tax bill is based on the taxable value of the entire property, which is computed by considering the sum of all tenants' improvements. Suppose your tax obligation is based on your pro rata share of the rentable space, without taking into consideration the fact that your neighbors' valuable improvements have upped the tax bill significantly. In that case, you'll be paying more than your fair share.
One way to even things out is to bargain for your tax obligations to be based on your pro rata share of the taxable value of the entire property, instead of your pro rata share of the entire rentable space. That way, you pay according to the value of your space.
It's unlikely that you can get the tax assessor to separately value individual tenants' spaces in a commercial building. The best way to estimate your fair share of taxable value is to:
Suppose a small strip mall in Pacific Cove has three commercial spaces and 10,000 square feet available.
Tenant A leases 2,000 square feet for an auto repair shop. A adds a hoist, automatic garage doors, a heavy-duty ventilation system, and extensive electrical wiring, all of which became permanent improvements, to their shop. Rebuilding this space would cost $150 per square foot.
Tenant B leases 5,000 square feet to use as a distribution center for dry goods. B adds nothing to the bare space when they moved in. To rebuild would cost $50 per square foot.
Tenant C leases the remaining 3,000 square feet and adds interior walls and some lights for use in their telemarketing business. Rebuilding costs for this space would be $65 per square foot.
The tenants all have triple net leases, which are all up for renegotiation.
Table 1, below, shows what happens to each tenant's tax obligation if it's figured on the basis of that tenant's portion of the rentable space only. In this table, the rent isn't adjusted for the individual value of each tenant's space.
Table 2 shows what happens to each tenant's taxable share when the landlord figures it according to the value of each tenant's rented space. In this table, the tenants' improvements are accounted for in the rent calculation.
Tenant
Rented space (square feet)
Rentable space
Ratio (rented space/rentable space)
Tenant's share of the taxes
A (extensive improvements)
20% of the total
B (added nothing)
50% of the total
C (moderate improvements)
30% of the total
Tenant
Replacement cost per square foot
Rented space, square feet
Cost to replace own space
Replacement cost of entire property
Tenant's share of replacement costs
Tenant's share of the taxes
A (extensive improvements)