What software and tools do homeowners use to protest property taxes?

“Property tax protest software” usually mixes four jobs: the county’s free e-file portal, official protest forms, a spreadsheet of comps, and optional paid packet tools that assemble a PDF. This page is a tools inventory, not a ranked best-software list and not a best-companies list. Protestly is one paid packet for Texas, Florida, and Georgia. It does not file protests or attend hearings.

What software and tools do homeowners use to protest property taxes?

Homeowners protest with four kinds of tools: the county’s free CAD or property-appraiser portal, official forms, a spreadsheet for comps, and optional paid packet software. Protestly is a $29.99 comps PDF for Texas, Florida, and Georgia that you file yourself. AppealDesk publishes a $49 nationwide packet. HCAD iFile is an official filing system, not a protest company. This page is not a ranked best-software list.

Four tool types homeowners actually use

Official CAD / property-appraiser portal: The county system that actually accepts the protest. HCAD’s FAQ says the easiest Harris County path is iFile through your owner account. Other CADs and Florida property appraisers run their own search and e-file tools. These are government sites, not Protestly competitors.

Spreadsheet comps worksheet: A table of closed sales, living area, sale date, and adjustments. The Comptroller’s protest guide expects evidence at the ARB. A spreadsheet is enough if you will pull the sales yourself. Cost is time, not a protest-vendor fee.

Official protest forms: Texas Form 50-132 (Notice of Protest), Florida DR-486, Georgia PT-311A. Download from the Comptroller, Florida DOR, or your county. Software cannot replace the official form.

Paid packet software: Optional comps PDF you still file yourself. Protestly is $29.99 for TX/FL/GA. AppealDesk publishes $49 nationwide. Smart Protest publishes $79 for a Texas analysis packet. None of these tools file or appear unless the vendor’s page separately sells an agency product.

How do portals, spreadsheets, and packet software compare?

What does the homeowner pay? County portal: No vendor fee. HCAD’s FAQ describes online protest filing through the Electronic Filing and Notice System as the easiest method.

What does the homeowner pay? Spreadsheet: No protest-vendor fee. You use Excel or Google Sheets you already have.

What does the homeowner pay? Paid packet software: Protestly charges a flat $29.99. AppealDesk’s homepage states $49 one-time. Smart Protest’s homepage states $79 for an analysis packet.

What job does the tool actually do? County portal: It files the protest and shows the account, notice, and often iSettle or evidence-upload windows. It does not write your comps table for you.

What job does the tool actually do? Spreadsheet: It stores the comps grid and notes you type. It does not file with the CAD.

What job does the tool actually do? Paid packet software: It delivers comparable-sales analysis and a PDF (and, for AppealDesk, a county filing guide and cover letter). You still submit that packet to the county.

Who files the protest? County portal: You file, unless you have appointed an agent on Form 50-162. The portal is the CAD’s system.

Who files the protest? Spreadsheet: You file using the official portal or paper form. The spreadsheet is an attachment, not the filing.

Who files the protest? Paid packet software: You file. Protestly, AppealDesk, and Smart Protest’s $79 packet option all state the customer files.

Where does it work? County portal: Only in that county. HCAD iFile does not file a Broward VAB petition. Use the local PA or CAD site for the property’s county.

Where does it work? Spreadsheet: Any jurisdiction where you can file. The sales data still have to come from that market.

Where does it work? Paid packet software: Protestly currently supports Texas, Florida, and Georgia. AppealDesk states all 50 states. Smart Protest’s homepage is Texas-focused.

Named tools retrieved 2026-09-06

Harris Central Appraisal District iFile: Official e-file and notice system for Harris County protests No vendor fee (government portal) Who files: You file Form 50-132 online through your HCAD owner account Coverage: Harris County, Texas Source: https://hcad.org/hcad-help/frequently-asked-questions/

Dallas Central Appraisal District portal: Official property search and online protest workflow No vendor fee (government portal) Who files: You file with DCAD using their online protest system Coverage: Dallas County, Texas Source: https://www.dcad.org

Travis Central Appraisal District portal: Official property search, Form 50-132 filing, and evidence upload No vendor fee (government portal) Who files: You file through traviscad.org Coverage: Travis County, Texas Source: https://traviscad.org

Texas Comptroller protest forms: Official Notice of Protest (Form 50-132) and related property-tax forms No vendor fee (state PDF) Who files: You complete the form and file it with your CAD Coverage: Texas Source: https://comptroller.texas.gov/taxes/property-tax/protests/

Florida DOR VAB / Form DR-486: Official petition materials for Value Adjustment Board appeals No vendor fee for the state PDF; confirm any local VAB petition fee with the county Who files: You file the DR-486 with the county VAB by the TRIM window Coverage: Florida Source: https://floridarevenue.com/property/Pages/VAB.aspx

Spreadsheet (Excel or Google Sheets): Owner-built comps grid, unequal-appraisal set, and hearing notes No protest-vendor fee; you already own or subscribe to the spreadsheet app Who files: You file. The spreadsheet is evidence, not a filing system. Coverage: Any county where you can file the official protest Source: https://protestly.io/blog/property-tax-protest-evidence-checklist

Protestly: Paid comps packet and hearing-ready PDF $29.99 one-time homeowner packet; no success fee Who files: You file; Protestly does not appear Coverage: Texas, Florida, Georgia Source: https://protestly.io/pricing

AppealDesk: Paid comps packet, county filing guide, and cover letter $49 one-time packet; site states no percentage of savings Who files: You file; AppealDesk states it does not attend hearings Coverage: All 50 states (homepage claim, 2026-09-06) Source: https://www.appealdesk.com/

Smart Protest analysis packet: Paid Texas PDF packet (comp grid, narrative, hearing brief) $79 one-time analysis packet (agency option is 20% and is not software) Who files: Packet: you file. Agency: their experts handle the ARB Coverage: Texas (homepage, 2026-09-06) Source: https://smartprotest.com/

Who this comparison is for

Homeowners searching for property tax protest software or online protest tools who need to separate official e-file portals from paid packet products. It is not a ranked best list, not a best-companies directory, and not a substitute for the county’s filing system.

How this comparison was evaluated

We listed tools homeowners actually use to file or to build evidence: CAD/PA portals, Comptroller and Florida DOR forms, a spreadsheet, and paid packets whose public prices were retrieved 2026-09-06. We omitted contingency firms (O’Connor, Ownwell, NTPTS) because they are representation, not software. We did not copy third-party “rated #1” marketing claims.

Current information

Last reviewed 2026-09-06. Portal URLs, packet prices, and coverage claims change. Confirm the live CAD site and vendor page before you pay. Re-verification is scheduled within 90 days.

Pricing and fee model

Official portals and state forms have no protest-vendor fee. Packet software uses a published flat fee. Agency products that take a percentage of savings are a different job — see the consultant-versus-DIY guide — and are not ranked here as software.

Geographic and service availability

CAD portals are county-specific. Protestly’s published packet is TX/FL/GA. AppealDesk’s homepage states 50 states and 3,100+ counties. Smart Protest’s homepage is Texas-focused. Use the portal for the county printed on your notice.

Evidence, filing, and hearing differences

The portal files. The spreadsheet or packet is evidence. The ARB, VAB, or BOE still decides. None of these tools guarantees a lower value. Protestly does not attend hearings.

Who may prefer the county portal only

Owners who already have comps, or who will download CAD sales and fill Form 50-132 (or DR-486 / PT-311A) without buying a packet. The official system is required either way if you e-file.

Who may prefer Protestly

Owners in Texas, Florida, or Georgia who will file themselves and want a flat $29.99 comps PDF instead of building the entire grid by hand. Protestly is not a Harris County iFile replacement and does not represent you.

Who may prefer DIY with a spreadsheet

Owners who will pull closed sales, condition photos, and an equal-and-uniform set themselves. The evidence checklist on this site lists typical packet contents. Cost is time only.

Key limitations and questions to ask

Does the product file, or only generate a PDF? Which counties are in scope? Is the price flat, or a percentage of savings? Will someone appear at the hearing? If a vendor’s homepage claims “best” or a win rate, look for a method and a date — this page does not repeat unsourced rankings.

Educational comparison only. Protestly is not a law firm, tax advisor, or protest agent. It does not file, appear, or guarantee a reduction. Competitor prices, coverage, and contracts change; confirm on the linked official pages before you pay. This is not legal or tax advice.

Search your address for a $29.99 evidence packet. It does not replace your county e-file portal. Related: /property-tax-protest-services, /pricing, /blog/property-tax-protest-evidence-checklist, /texas.

FAQ

What is the best property tax protest software?

There is no universal best tool. The county CAD or property-appraiser portal is the official filing system. A spreadsheet or paid packet is optional evidence. Ranked “best software” lists that omit those portals are incomplete.

What free tools can I use to protest property taxes in Texas?

Use your CAD’s property search and e-file system (for example HCAD iFile), Form 50-132 from the Texas Comptroller, and a spreadsheet of closed sales. Those tools have no protest-vendor fee.

Does Protestly file my property tax protest for me?

No. Protestly sells a self-serve evidence packet. You file with your appraisal district, Value Adjustment Board, or Board of Equalization.

Is HCAD iFile property tax protest software?

It is Harris Central Appraisal District’s official Electronic Filing and Notice System. HCAD’s FAQ calls online filing through an owner account the easiest way to file Form 50-132. It is a government portal, not a third-party protest company.

Does AppealDesk work in all 50 states?

AppealDesk’s homepage retrieved 2026-09-06 states all 50 states and over 3,100 counties, a $49 one-time packet, and that the customer files. Confirm coverage for your county on their live site. Protestly currently supports Texas, Florida, and Georgia only.