Firms that appeal Philadelphia assessments don't usually advertise a price on a menu — they attach their fee to your outcome. Understanding the two ways they charge is the difference between a good deal and quietly handing over most of your savings.
Almost every property tax appeal firm — whether it markets itself as a law practice or a "tax representative" or consultant — bills one of two ways. The labels are simple; the fine print is where the money moves.
With a contingency arrangement, the firm takes a percentage of the tax savings your appeal generates. There's typically nothing to pay upfront, which is the appeal of the model — you only pay if you "win." The catch is what counts as the win. Some firms take a large share of your first year's savings; others take a cut of savings across multiple years. Because assessments — and the reductions from a successful appeal — tend to carry forward until the next reassessment, a fee framed as "just the first year" can still represent a meaningful slice of a benefit you'd otherwise keep indefinitely. Percentages vary from firm to firm, so the only figure that matters is the one in your specific agreement.
A flat fee is a fixed charge for handling the appeal, owed whether or not it succeeds. Flat fees can run into the hundreds of dollars for a residential filing, and more for complex properties. The advantage is predictability: you know the cost going in. The risk is that you pay it even if the appeal is denied — so a flat fee is really a bet that the firm can move your number.
A contingency fee sounds free because there's nothing upfront. But it's charged against the exact savings you were appealing to keep.
Here's the piece that's easy to miss. When you win a residential appeal, the lower assessed value usually stays in place until the city reassesses — so the savings recur year after year. A contingency fee is calculated off those savings. Give away a large share of the reduction and you've turned a durable, recurring win into a smaller one, sometimes for a single form and a stack of comparable sales.
Consider the shape of it with an illustrative example only: say an appeal moved an assessment from an example figure of $312,000 down to $267,500. Applied at Philadelphia's total effective rate of 1.3998% of assessed value (the combined City and School District rate), that gap is real money — every year the lower value holds. A contingency firm's cut comes straight out of that. The reduction is the same whether you paid someone or filed it yourself; the only variable is how much of the benefit you keep. (The dollar figures here are an example, not a promise — your own numbers depend entirely on your property.)
It's worth being clear-eyed about the service. For a straightforward residential appeal, a firm isn't performing courtroom advocacy. It's doing research and formatting:
That's a valuable service when it's done well — but it's a research task, not a legal one. And research tasks are exactly what software has gotten good at. Once the comparable-sales analysis can be generated automatically, the justification for a large percentage of your recurring savings gets much thinner.
This is the whole premise behind TaxAssessmentIQ. It does the same research a firm would — pulls your live OPA record, finds real comparable sales, and tells you honestly whether the gap is worth appealing — then generates a BRT-ready packet you file yourself. The cost is a flat, transparent price rather than a share of every year's savings. You keep 100% of what the appeal saves you.
That doesn't make firms worthless; it makes them the right choice for a narrower set of situations. Before you sign a contingency agreement for a single home, it's worth seeing all four routes side by side in our comparison of appeal help options, and reading how the DIY path actually works. If you're still unsure whether your case even needs a professional, start with do you need a lawyer to appeal?
None of this means never hire anyone. Large commercial buildings, multi-property portfolios, and income-based valuation disputes involve analysis that rewards specialized expertise, and the dollars at stake can dwarf any fee. Cases likely to escalate beyond the Board into litigation are another. For those, a good property tax attorney earns their percentage. But for the typical Philadelphia homeowner with an over-assessed rowhome, the fee is usually the most expensive part of an appeal you could have run yourself. And remember — no firm, and no tool, can guarantee an appeal will win; what you're paying for is the research, and that's exactly what you can now get without a contingency cut.
Two models are common. A contingency fee takes a share of the tax savings your appeal produces — often a large portion of the first year's reduction, and sometimes a cut of multiple years. A flat fee is a fixed charge whether or not you win; flat fees can run into the hundreds. Terms vary widely, so always read the agreement.
Your assessment reduction typically recurs every year until the next reassessment, but a contingency fee is charged against your savings. Handing over a share of the benefit turns a recurring win into a smaller one, which is why many owners with a straightforward residential case keep more by filing themselves.
For a routine residential appeal, mostly research and formatting: pulling your record, selecting comparable sales, and packaging the case. Software collapses that cost because those steps can be automated, which is what TaxAssessmentIQ does for a flat, transparent price.
It depends. A flat fee is predictable but is owed even if the appeal fails. A contingency fee costs nothing upfront but can claim a large share of your savings if you win. Neither is universally cheaper; the right comparison is against doing the research yourself.
Yes, for complex commercial properties, portfolios, income-based valuation disputes, or cases likely to reach litigation. For a single owner-occupied home, the fee usually outweighs the benefit of professional help.
TaxAssessmentIQ gives you a free, honest verdict from the City's own recorded sales — just enter your address, no sign-up and no account. If your home looks over-assessed, you can get a ready-to-file appeal packet for a flat, one-time price, backed by a money-back guarantee. If it isn't worth filing, we tell you that too — for free, before you pay anything.