Best Property Tax Protest Companies in Dallas (2026)

At the Dallas County median — a $277,900 home carrying a $4,668 tax bill — the answer is not the one we would like it to be. A 25% contingency costs less than our flat $129 on that property. Above roughly $307,000 in assessed value, the flat fee wins and keeps winning.

Here is every firm working Dallas County, what each charges, and the point where the models cross.

Every fee, as each company states it

What each one costs on a median Dallas home

Dallas County homeowners pay a median property tax of $4,668 a year on a median home value of $277,900 — an effective rate of 1.68%. Say a protest knocks 10% off that assessment, which is the low end of what a well-prepared case does. That is $27,790 off the value and about $467 off the bill.

On a median Dallas home a contingency firm is cheaper, and we would rather say so than bury it. A percentage of $467 is a small number. That is the whole argument for contingency pricing and it is a good one.

Where the flat fee takes over

A $129 flat fee beats a 25% contingency once annual savings clear about $516. At Dallas County’s 1.68% effective rate, that means an assessment reduction of about $30,700 — roughly a $307,000 home taking a 10% cut, or a smaller home taking a bigger one.

Against the 40% and 50% firms the crossover comes far sooner: about $19,200 and $15,400 of reduction respectively. Most of Dallas’s move-up and newer-construction stock sits well past all three lines.

• Under about $307,000 assessed? Use a contingency firm, or file it yourself.
• Over it? A flat fee costs less, and the gap widens with every dollar of reduction.
• Well over it? The gap gets absurd. A $6,000 reduction still costs $129, and costs a 25% firm about $1,500.

What DCAD actually requires

The Dallas Central Appraisal District (DCAD) sets the value. The protest deadline is May 15, or 30 days after your notice of appraised value is delivered, whichever is later. Late protests are accepted up until the day before the Appraisal Review Board approves the records. There is no filing fee.

Texas informal protests succeed 80–90% of the time statewide, per Texas Comptroller Operations Survey data. Showing up with organised evidence is most of it — only about 5% of homeowners protest at all.

You need three things: the Notice of Protest form, evidence of market value (comparable sales or an independent appraisal), and your assessment notice. The evidence is the part that decides it. Comparable sales have to be adjusted for size, age and condition, and a comp the board rejects hurts you more than no comp at all.

Full detail on the local process is on our Dallas County protest page.

Which of these firms are actually in Dallas

All eight work Dallas County. The distinction that matters is not headquarters, it is what happens if the informal offer is low.

O’Connor pursues binding arbitration and judicial appeals that most residential firms will not touch — that is what the 50% buys. Texas Protax runs licensed agents in-house rather than subcontracting. Five Stone and Home Tax Shield are volume residential operations; Home Tax Shield’s $30 + 30% is the lowest full-service contingency on this list. Ownwell is the cheapest pure contingency at 25% and operates well beyond Texas.

Abode is a $99 annual membership bundling several homeowner money services, so it is only the cheapest option if you want the rest of the bundle too.

How to choose

• Below the $307,000 line? Contingency, or DIY. Ownwell’s 25% is the lowest pure contingency here.
• Above it, and you want it handled? Full service, accepting that the fee scales with your win and recurs each year they win again.
• Above it, and you will spend twenty minutes filing? Flat-fee evidence. You keep the whole reduction and the working file.
• Not sure you are even over-assessed? Check before you enrol anywhere. Roughly 30–60% of properties are over-assessed, which means plenty are not.

Where TaxDrop lands

TaxDrop One is $129 flat per property, per tax year: we build the evidence — sales comps, equity comps, the adjustments and a defensible number — and you file it and speak for yourself. If your property is already assessed fairly, we tell you before you pay. TaxDrop Pro is full service in Dallas County at 1% of the assessment reduction we win, with no fee unless we reduce it.

Check what your Dallas property is really worth — free, about two minutes →

How we verified these fees

Every figure is taken from the company’s own published pricing, checked in August 2026, except O’Connor’s, last confirmed July 2026. Contingency rates vary by region, property type and product tier, and companies change them — confirm the current rate for your property before you sign. Median value, tax bill and effective rate for Dallas County are from our own Dallas County property tax data. The dollar examples assume a 10% assessment reduction and are illustrations, not predictions.

Comparing more than Dallas? See the full national breakdown: every property tax protest company and what each one charges.