PenaltyBack vs Other Tax Services: How to Evaluate a COVID-Era Refund Provider

TL;DR

Several services have launched to help taxpayers file Kwong-based COVID-era refund claims. Here is a neutral framework for evaluating the choices — credentials, fee structure, IRS access, scope, transparency — so you can pick the one that fits.

In one paragraph

Several services have launched since the November 2025 Kwong v. United States decision to help taxpayers file COVID-era penalty refund claims on Form 843. Quality varies widely. The right way to evaluate any of them — including PenaltyBack — is to apply seven specific criteria: credentials, IRS access level, fee structure, scope of work, what happens if no refund is recovered, mailing and filing logistics, and data privacy.

The seven evaluation criteria

1. Credentials — what authorizes the provider to handle IRS data?

Look for: Circular 230 representation rights (CPAs, EAs, attorneys, IRS-permissioned tax-data providers); IRS e-Services access; or none of the above (form-filling tools that ask the taxpayer to upload their own transcript).

Ask: "What is your IRS-authorized access level? Do you pull transcripts directly via e-Services, or do you ask me to upload them?"

2. IRS access — view-only or read-write?

View-only means the provider cannot modify, file on, or alter anything in the taxpayer's IRS account. Read-write means the provider could potentially file returns, set up payment plans, or otherwise act on the account. For a Form 843 protective-claim service, view-only is the appropriate level.

Ask: "Is your IRS access view-only, or does it include the ability to file or modify? Can you confirm in writing that the engagement does not give you write access to my account?"

3. Fee structure — transparent, contingent, or hourly?

  • Contingency (no win, no fee). Percentage of recovered refund; no fee if no refund.
  • Flat fee per claim. Fixed dollar amount per Form 843, paid regardless of outcome.
  • Hourly billing. Provider bills time, paid regardless of outcome.
  • Hybrid. Some combination, sometimes with an upfront engagement fee.

Ask: "What is the exact fee, in dollars or percentage? Do I owe anything if no refund is recovered? When is the fee due?"

4. Scope of work — analysis only, or full preparation and filing?

Some providers do only the analysis; some do the full workflow including certified mailing.

Ask: "Is the engagement analysis-only, preparation-only, or end-to-end through certified mailing? Do you mail the Form 843 on my behalf?"

5. What happens if no refund is recovered?

  • "You owe nothing." Provider absorbs all costs.
  • "You owe the prep fee but not the contingency." Taxpayer pays for the work but not for a refund that didn't materialize.
  • "You owe the full hourly or flat fee." Paid regardless of outcome.

Ask: "If the Kwong appeal overturns the lower-court decision and the IRS denies my protective claim, what do I owe?"

6. Mailing and filing logistics — who handles the certified mail?

The certified-mail postmark date establishes the filing date for the IRC § 6511 deadline.

Ask: "Do you mail the Form 843 certified with return-receipt requested on my behalf? Will I receive copies of the receipt and return-receipt card?"

7. Data privacy — how is taxpayer data protected?

  • Encryption: 256-bit AES at rest, TLS 1.2+ in transit
  • No third-party sharing
  • Clear retention policy
  • Multi-factor authentication on system access

Ask: "Where is my taxpayer data encrypted? Is it shared with any third parties? How long is it retained after my engagement ends?"

Red flags to watch for

  • Refusing to disclose the fee in writing before signup.
  • Promising guaranteed refunds. No service can guarantee a refund.
  • Asking for upfront payment for a contingency claim.
  • Vague or refused answers about IRS access level.
  • Mailing the claim without a certified-mail receipt.
  • Aggressive cold-calling or unsolicited mailers claiming the IRS owes a specific amount.

How PenaltyBack measures against the framework

Stated factually, sourced from the live PenaltyBack homepage and FAQ:

  1. Credentials. Product of TaxNow, an IRS-permissioned tax-data provider with Circular 230-level access via the IRS e-Services system.
  2. IRS access. View-only. PenaltyBack can read IRS account transcripts but cannot modify, file, or alter anything in the taxpayer's IRS account.
  3. Fee structure. Contingency. $0 upfront. Fee is a percentage of any refund recovered, paid only if a refund is recovered.
  4. Scope of work. End-to-end. Pulls the transcript, identifies eligible assessments, calculates the potential refund, prepares Form 843, and mails the claim certified.
  5. What happens if no refund is recovered. Per the live FAQ: "If the rulings are upheld, your claim is already in the system. If they're overturned, you owe nothing."
  6. Mailing logistics. Certified mail with return-receipt requested, mailed by PenaltyBack on the taxpayer's behalf.
  7. Data privacy. 256-bit encryption (per the live homepage). The live homepage also states: "We never share your personal information with third parties."

Apply the same seven questions to any other service you are evaluating.

Frequently asked questions

Are there any free Kwong-claim services?

PenaltyBack's eligibility check is free. The IRS itself charges nothing for filing a Form 843 (other than postage). A service with no fee at all is unusual — the work has costs.

How can I tell if a service is legitimate?

Apply the seven-criterion framework. Any service that gives clean answers to all seven and can put them in writing is likely legitimate.

Does PenaltyBack publish reviews or success metrics?

Yes — the live homepage publishes ongoing metrics. As of May 8, 2026: 2,374 claims checked, average individual refund $2,383, average business refund $27,645, 4.9-star rating.

What if a service offers a flat fee much lower than PenaltyBack's percentage?

For large potential refunds, a flat fee may be cheaper in dollar terms. The math depends on the potential refund size and the flat fee size.

Should I check the BBB or other review sites?

Independent review sources are useful. The IRS publishes lists of enrolled agents and CPAs with active Circular 230 rights. State CPA boards publish disciplinary records.

What if I want to compare PenaltyBack with my CPA or DIY?

See the companion guides: PenaltyBack vs your CPA, and PenaltyBack vs filing yourself.