Honest comparison · 2026
Looking for an O'Connor alternative?
O'Connor takes 50% of your savings for the appealed tax year, the steepest contingency in the market, and the firm is the subject of a Texas Attorney General lawsuit (allegations unproven). If you want a lower-cost, more transparent option, here are the flat-fee alternatives.
| Service | Fee | You keep on a $3,000 saving | Comp data |
|---|---|---|---|
AppealMyTax $49 Audit Filing or valuation output (you file) · $29 DIY kit: all 50 states + D.C.; $49 Audit: evidence varies by county and address | $49 flat, one time | $2,951 | Public county records; comparable evidence only where usable. Filing or valuation output depends on findings. The $29 kit requires your own evidence. |
TaxLasso Done for you · Texas only | $199 flat | $2,801 | AI analysis, then they file and negotiate for you |
AppealDesk Filing-ready packet (you file) · Claims all 50 states / 3,100 counties | $49 flat | $2,951 | Third-party property, assessment and comparable-sales records; free preliminary results advertised (checked September 11, 2026) |
$3,000 is an illustrative annual saving. Fees are each provider's publicly listed pricing as of June 2026; verify on their sites.
The honest verdict
Choose based on your property, evidence and how much work you will do yourself. Our $29 national DIY kit provides guidance and worksheets; you gather the evidence. The $49 Audit depends on county/address records and provides the filing or valuation output they support. Searchable records are not a promise of comparable sales. Managed services may file and represent you; compare their current local terms. No provider can guarantee an identical outcome or lasting savings.
More on why we are flat-fee and how to vet any appeal service on our honest comparison page, or run your own numbers in the fee calculator.
Prepare your own appeal
The $29 DIY kit includes state process guidance, fillable evidence worksheets and an editable letter. You gather your property evidence and file yourself; property-specific comparables are not included.
Choose your state · $29 DIY kitsWant to check available property records first? Coverage and comparable evidence vary by address. Where supported, the results explain what the separate $49 Property Assessment Audit includes before you buy. A records check does not establish that you are overassessed.
Check available property records · Free
You can prepare before your filing window. Verify your current local deadline; buying a kit does not extend it.