Summary answer: Fairfax County's official 2026 real estate tax rate is $1.1225 per $100 of assessed value. On a $650,000 Centreville home, that works out to roughly $7,296 per year, or about $608 per month — a real number to build into your monthly budget beyond principal and interest.
I'm Johnny with JQ Real Estate. Here's exactly how this breaks down and how it compares regionally.
How Fairfax County's rate compares
| Locality | 2026 Rate per $100 Assessed Value |
|---|---|
| Fairfax County (includes Centreville) | $1.1225 |
| Alexandria City | ~$1.135 |
| Arlington County | ~$1.033–$1.053 |
| Loudoun County | ~$0.805 |
| Prince William County | ~$0.906 |
Fairfax County runs on the higher end within Northern Virginia, meaningfully above Loudoun and Prince William, though close to Alexandria and Arlington.
How your bill is actually calculated
Fairfax County assesses property at 100% of fair market value, with annual reassessments and two payment installments (July 28 and December 5). Your bill is simply your home's assessed value multiplied by the current rate.
Why this matters for your monthly budget, not just annually
- Your lender includes this in your monthly payment — rolled into escrow along with principal, interest, and insurance, directly affecting your qualifying DTI
- It's a bigger line item than buyers expect — on a $650K home, over $600/month in taxes alone is meaningful
- HOA communities add on top — Sully Station and Virginia Run dues count against your DTI separately
Can you appeal your assessment?
Yes — Fairfax County allows homeowners to formally appeal if they believe their assessed value exceeds fair market value. Worth knowing as a future homeowner if your assessment jumps significantly in a later year.
Factor this into your real budget
Property taxes are one of the most commonly underestimated home costs. Reach out and let's run your real numbers, taxes included.
For more Centreville buyer and seller questions, visit our Centreville real estate hub.