A flat-fee property tax protest service charges a fixed price, like $39.99, regardless of your savings. A percentage-based (contingency) firm takes 25–50% of whatever reduction you achieve. On a $400,000 home, the difference in take-home savings can be $300–$500 per year — that’s a lot.
Why Does the Pricing Model Matter?
Most homeowners who’ve never protested don’t realize there are two very different ways to pay for help. And if you’ve been paying a contingency firm for years, you may not have thought about how much of your savings you’re actually keeping.
That’s not unusual. The contingency model is the default in Texas. Firms advertise “no upfront cost” and “you only pay if we save you money.” It sounds risk-free. But “risk-free” and “free” are not the same thing.
Understanding the difference is worth a few minutes of your time. The math is straightforward, and it could change how you think about property tax protests.
What’s the Difference Between the Two Models?
The Contingency Model (Percentage-Based Firms)
A contingency firm files your protest for you. If they win a reduction, they take a percentage of the savings — typically 25–40%, and sometimes as high as 50%.
You don’t pay upfront. But you also don’t see the evidence before it’s filed. You may not know which comparable homes were selected, or what arguments were made. Many firms auto-renew contracts year after year.
Common features of the contingency model:
- No upfront fee — you pay a percentage of savings
- The firm files the protest on your behalf
- You typically don’t see the evidence before it’s submitted
- Contracts often auto-renew annually
- The firm decides when to settle and at what value
The Flat-Fee Model (Self-File with Evidence)
A flat-fee service provides you with the evidence you need to protest yourself. You see everything. You decide whether to file. You control the entire process.
The price is fixed. Whether your savings are $500 or $2,000, you pay the same amount. There is no contract. No auto-renewal. No percentage of your savings going to anyone else.
Common features of the flat-fee model:
- Fixed price — $39.99 regardless of outcome
- You see every piece of evidence before you pay
- You file the protest yourself using a county-specific guide
- No contract, no auto-renewal
- You keep 100% of any savings you achieve
The Math: How Much Do You Actually Keep?
This is where the difference becomes concrete. Let’s look at what happens at different home values, assuming a 10% assessed value reduction.
$250,000 Home
Total Savings: ~$433/year
- With 30% Contingency: You pay $130 — You keep $303
- With $39.99 Flat Fee: You pay $39.99 — You keep $393
- The Winner: The Flat Fee saves you an extra $90.
$350,000 Home
Total Savings: ~$605/year
- With 30% Contingency: You pay $182 — You keep $424
- With $39.99 Flat Fee: You pay $39.99 — You keep $565
- The Winner: The Flat Fee saves you an extra $141.
$450,000 Home
Total Savings: ~$780/year
- With 30% Contingency: You pay $234 — You keep $546
- With $39.99 Flat Fee: You pay $39.99 — You keep $740
- The Winner: The Flat Fee saves you an extra $194.
$500,000+ Home
Total Savings: ~$865/year
- With 30% Contingency: You pay $260 — You keep $606
- With $39.99 Flat Fee: You pay $39.99 — You keep $825
- The Winner: The Flat Fee saves you an extra $219.
Savings estimates use the blended Texas metro effective rate of ~1.73%. Actual results vary by county and taxing district.
With a contingency firm, you pay the percentage every year the reduction holds. With a flat fee, you pay once. The gap compounds over time.
What Does That Look Like Monthly?
On a $400,000 home with a 10% reduction at the blended metro rate:
- Contingency firm (30%): you keep ~$40/mo (~$485/yr)
- Flat fee ($39.99 once): you keep ~$54/mo (~$653/yr)
That’s about $14/mo more in your pocket with the flat-fee model. Over three years, the difference is over $500.
Beyond Price: Transparency and Control
Price matters. But it’s not the only factor. Two other differences are worth considering.
Do You See the Evidence?
With most contingency firms, you don’t see the evidence before it’s submitted. The firm picks the comparable homes. The firm decides the strategy. You find out the result after the fact.
With a flat-fee evidence service, you see everything before you decide to file. The comparable homes. The fairness analysis. The condition evidence. Nothing moves forward without your approval.
Who Controls the Process?
A contingency firm has an incentive to settle quickly. They handle thousands of protests at once. Settling fast, even for a smaller reduction, means more revenue per hour for the firm.
When you file yourself with organized evidence, you control the timeline. You decide whether to accept the county’s first offer or push for more. You are not one of 10,000 files on someone’s desk.
Do DIY Filers Actually Win?
Yes. In Harris County, 82% of DIY filers who protested succeeded. That’s compared to 53% for agent-represented protests. Organized evidence is the key factor, not who files.
A contingency firm’s experience has value. But the data suggests that homeowners with structured evidence achieve comparable or better results on their own.
When Does Each Model Make Sense?
A contingency firm might be the right choice if:
- You have no time to file the protest yourself
- You want someone else to handle the entire process end to end
A flat-fee evidence service might be the right choice if:
- You want to see the evidence before anything is filed
- You want to keep 100% of any savings
- You prefer to control the process and make your own decisions
Frequently Asked Questions
Do contingency firms get bigger reductions than DIY filers?
Not necessarily. In Harris County, DIY filers succeeded 82% of the time, compared to 53% for agent-filed protests. Organized evidence matters more than who files.
What if the flat-fee evidence doesn’t result in savings?
That is a possibility. There is a 7-day post purchase satisfaction guarantee that covers you if you are dissatisfied with the evidence we provide. If you’re not satisfied, you can request a full refund. And remember: Texas law says your assessed value cannot go up as a result of a protest.
Can I switch from a contingency firm to flat fee?
Yes, but check your current contract first. Many contingency firms auto-renew annually. You may need to cancel before a specific date.
Is $39.99 the only cost?
Yes. The $39.99 Smart Saver price includes the full evidence packet: E&U equity report, interactive condition evidence toolkit, and county-specific filing guide. Filing a protest with the county is free.