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💰 Financial · Rex's Toolbox

Property Tax Appeal Calculator

Multi-year savings if your assessment is reduced, net of appeal costs.

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Rex says

Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.

Try a scenario

Click to load — tweak from there.

Inputs

Result

Annual tax savings

$878

Net savings after costs

$2,083

Gross savings over the period

$2,633

Consultant contingency fee

$0

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How to use this

  1. 1Enter current assessed value ($).
  2. 2Enter value you're arguing for ($).
  3. 3Enter assessment ratio (%).
  4. 4Enter tax rate (%).
  5. 5Enter years until revaluation.
  6. 6Enter appraisal + filing costs ($).
  7. 7Enter consultant share of year-1 savings (%).
  8. 8Read your annual tax savings on the right — it updates as you type.
  9. 9Hit Share to keep the scenario or send it to someone.

About this calculator

An assessment reduction compounds: it lowers the bill every year until the next revaluation. Compare the savings stream against the appraisal, filing, and consultant fees required to win.

FormulaAnnual saving = (assessed − proposed) × assessment ratio × mill rate; net = saving × years − costs.

Worked example

Using the values the calculator loads with:

Inputs

  • Current assessed value: 480000 $
  • Value you're arguing for: 415000 $
  • Assessment ratio: 100 %
  • Tax rate: 1.35 %
  • Years until revaluation: 3
  • Appraisal + filing costs: 550 $
  • Consultant share of year-1 savings: 0 %

Results

  • Annual tax savings: $878
  • Net savings after costs: $2,083
  • Gross savings over the period: $2,633
  • Consultant contingency fee: $0

What each field means

Inputs

Current assessed value ($)
The current assessed value used in the calculation, measured in $. Starts at 480000 $ so you have a working example on load.
Value you're arguing for ($)
The value you're arguing for used in the calculation, measured in $. Starts at 415000 $ so you have a working example on load.
Assessment ratio (%)
The assessment ratio used in the calculation, measured in %. Starts at 100 % so you have a working example on load. Accepted range: 1–100 %.
Tax rate (%)
The tax rate used in the calculation, measured in %. Starts at 1.35 % so you have a working example on load. Accepted range: 0–10 %.
Years until revaluation
The years until revaluation used in the calculation. Starts at 3 so you have a working example on load.
Appraisal + filing costs ($)
The appraisal + filing costs used in the calculation, measured in $. Starts at 550 $ so you have a working example on load.
Consultant share of year-1 savings (%)
The consultant share of year-1 savings used in the calculation, measured in %. Starts at 0 % so you have a working example on load. Accepted range: 0–60 %.

Results

Annual tax savings
Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Net savings after costs
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Gross savings over the period
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Consultant contingency fee
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

What evidence wins an appeal?

Recent comparable sales below your assessment, documented condition problems, and errors in recorded square footage or bedroom count are the strongest arguments.

Can my assessment go up if I appeal?

In some jurisdictions the board can raise the value if the evidence supports it. Check local rules before filing when your assessment already looks low.

Accuracy and limitations

  • Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
  • Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
  • This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.

Cite this calculator

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APA
RevenueLab. (2026). Property Tax Appeal Savings Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/property-tax-appeal-savings
HTML
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/property-tax-appeal-savings" target="_blank" rel="noopener">Property Tax Appeal Savings Calculator — RevenueLab</a> (2026).</p>
Markdown
Source: [Property Tax Appeal Savings Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/property-tax-appeal-savings) (2026).
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