The Complete Property Tax Guide — How It Works, When It Is Due, and How to Reduce It

What Is Property Tax?

Property tax is an annual levy imposed by local governments on the assessed value of real estate — residential, commercial, and land.

Unlike income tax (paid on earnings) or capital gains tax (paid when you sell), property tax is owed simply for owning property — every year. This makes it one of the most important ongoing costs in real estate investment.

Who collects it: Primarily counties and municipalities. The revenue funds local schools, infrastructure, police, and fire services.

How Property Tax Is Calculated

The Basic Formula

Property Tax = Assessed Value × Mill Rate (tax rate)

Most jurisdictions do not tax the full market value. They apply an assessment ratio to arrive at the assessed value:

Assessed Value = Market Value × Assessment Ratio

Assessment ratios vary widely by state and county. Common examples:

100%: Assessed value equals market value (common in many US states)
85% or lower: Many jurisdictions assess at a fraction of market value

Mill Rate

The mill rate (or millage rate) is the amount of tax per $1,000 of assessed value.

A mill rate of 10 mills means $10 of tax per$ 1,000 of assessed value
A mill rate of 20 mills means $20 of tax per$ 1,000 of assessed value

Example Calculation

Home market value: $400,000 Assessment ratio: 100% Mill rate: 15 mills

Assessed value = $400,000 × 100% =$ 400,000 Property tax = $400,000 × (15/1,000) = **$ 6,000/year**

Actual effective property tax rates across the US range from under 0.3% (Hawaii) to over 2.0% (New Jersey, Illinois, New Hampshire). The national average is approximately 1.1%.

When Is Property Tax Due?

Payment timing varies by jurisdiction, but the most common structures are:

Semi-Annual (most common)

First installment: Often due in the spring (April–June)
Second installment: Often due in the fall (October–December)

Annual Payment

Some counties bill once per year, typically in November or December.

Escrow via Mortgage

If you have a mortgage, your lender typically collects 1/12 of your estimated annual property tax with each monthly payment, then pays the tax authority on your behalf. Check your escrow statement for the exact schedule.

Late payment penalties: Most jurisdictions charge 1–2% per month on unpaid balances after the due date.

Property Tax and Capital Gains Tax

Property tax is a local tax, separate from federal capital gains tax when you sell.

Federal capital gains on a home sale:

Primary residence: Exclude up to $250,000 of gain ($ 500,000 for married couples filing jointly) if you’ve owned and lived in the home for at least 2 of the last 5 years
Investment property: No exclusion; long-term gains taxed at 0%, 15%, or 20% depending on income

These are independent — paying your property tax does not reduce capital gains owed when you sell.

The Assessment Date and Closing Timing

Property tax is assessed as of a specific valuation date set by each jurisdiction — often January 1st.

This matters for real estate transactions:

Closing Date	Who Pays the Tax
Before the tax proration cutoff	Negotiated in the purchase contract; typically prorated by days of ownership
After a new assessment date	Buyer assumes that year’s liability

Standard practice: Property taxes are prorated at closing. The seller pays taxes through the closing date; the buyer assumes taxes from closing forward. Your settlement statement will show the proration credit.

Ways to Reduce Your Property Tax

1. Appeal Your Assessment

If your assessed value appears higher than comparable properties in your area, file a formal appeal.

How to appeal:

Request your property’s assessment card from the assessor’s office to verify accuracy
Research comparable sales (comps) in your neighborhood
File an appeal with your local board of assessment review before the deadline (typically 30–90 days after the assessment notice)
Prepare evidence: recent comparable sales, an independent appraisal, or documentation of property defects

Assessment appeals are successful 30–40% of the time and can generate meaningful savings.

2. Homestead Exemption

Most states offer a homestead exemption that reduces the assessed value for a primary residence.

Texas: Up to $100,000 of assessed value exempted for homestead
Florida: Up to $50,000 of assessed value exempted
California: $7,000 of assessed value exempted (modest but applies automatically once filed)
Requirements typically include: owner-occupied, primary residence, filed by a deadline

File your homestead exemption the year you purchase — many jurisdictions require an annual or one-time application.

3. Senior, Veteran, and Disability Exemptions

Many jurisdictions offer additional reductions for:

Homeowners age 65+ (often income-limited)
Veterans (partial to full exemption in many states)
Homeowners with qualifying disabilities

Check your county assessor’s website for eligibility requirements.

4. Credit Card or Online Payment Rewards

Many counties now accept credit card payments for property taxes. If your card offers meaningful cash back or rewards and the processing fee (typically 2–2.5%) is lower than the reward value, this can produce a net benefit. Always calculate the fee against the reward before paying.

5. Installment Payment Plans

If your tax bill is large and you’d prefer to spread the payment, many counties offer installment options at no additional cost. Enrolling avoids lump-sum cash flow stress.

OIYO Editorial