If you are an independent tax preparer deciding whether to handle IRS e-file transmission yourself or use a tax service bureau, this guide explains what a tax service bureau does, what requirements apply, and how America's Tax Professionals serves as an IRS-authorized transmitter for professional tax offices. The short answer: a service bureau removes the complexity of applying for and maintaining your own transmitter authorization, so you can focus on preparing accurate returns.
For preparers doing more than 10 returns per year, e-filing is a legal requirement. Depending on your arrangement, you can either operate with your own EFIN (as an ERO using ATP for transmission) or work under ATP's service bureau umbrella without a separate EFIN of your own. ATP supports both models. Contact ATP to discuss which applies to your practice.
What Is a Tax Service Bureau?
A tax service bureau is a business that holds an IRS e-file transmitter authorization and allows other credentialed tax preparers to submit client returns through that authorization. The service bureau does not prepare the returns. Instead, it receives signed, completed returns from the preparers it serves and handles the technical transmission to the IRS.
In the tax industry, the term "service bureau" is not formally defined by the IRS. What the IRS calls it is a "transmitter." A transmitter is an entity authorized by the IRS to send electronic return data directly to IRS systems. That authorization is separate from the EFIN that an ERO (Electronic Return Originator, the preparer) holds.
Service bureaus are operated by large tax software companies, authorized resellers like America's Tax Professionals, franchise networks, and some state accounting associations. They provide not just transmission but often software, bank products, training, and customer support. The core service is handling the transmitter role for other preparers.
Transmitter vs. ERO: Understanding the Two Roles
The IRS requires two distinct parties to handle different parts of an electronic return. Knowing these roles is essential to understanding whether a service bureau is right for you.
The ERO (Electronic Return Originator)
The ERO is the preparer. You interview the client, gather documents, prepare the return in tax software, and obtain the client's signature on Form 8879 (IRS e-file authorization form). Once the return is signed and ready, you send it to a transmitter. You are responsible for the accuracy and compliance of the return itself. To operate as an ERO, you must hold a PTIN and an EFIN issued directly to you by the IRS.
The Transmitter
The transmitter receives the signed return data from the ERO and sends it directly to the IRS. The transmitter does not prepare the return, does not sign it, and does not have authority over the taxpayer. The transmitter's role is purely technical: validate the file format, ensure IRS-required security protocols are met, deliver the file to IRS systems, and relay the IRS acknowledgment back to the ERO.
One Preparer, Two Credentials
A tax preparer can hold both an ERO credential (EFIN) and separate transmitter authorization. If you apply for and receive IRS transmitter authorization, you can prepare returns (ERO role) and transmit them to the IRS (transmitter role) yourself.
Alternatively, you can hold only an ERO credential. You prepare returns and send them to another company (a service bureau) that holds transmitter authorization. The service bureau handles the transmission step while you handle the client relationship and return accuracy. This is the model ATP supports.
Why Use a Service Bureau Instead of Applying for Transmitter Authorization Yourself?
Using a service bureau is simpler, faster, and carries fewer ongoing regulatory burdens than applying for your own transmitter authorization. Here are the concrete advantages for most independent preparers.
Skip the IRS suitability check for transmitter status
When you apply for transmitter authorization, the IRS conducts a suitability background check: credit check, criminal background, tax compliance verification, and fingerprinting. This is separate from the EFIN suitability check. If your personal credit or tax history raises questions, your transmitter application can be delayed or denied. Using a service bureau requires no separate transmitter suitability check.
Avoid the processing wait for transmitter applications
The IRS typically takes 45 days or more to review and process a transmitter application. During that time, you cannot transmit returns under your own authorization. If you want to offer e-file to clients right away, the delay is costly. With a service bureau, you can begin transmitting within days of enrollment.
No annual transmitter compliance burden
As a transmitter, the IRS requires you to keep software current with IRS-mandated updates, participate in IRS Assurance Testing annually, maintain IRS-required security practices, renew your transmitter authorization each year, and keep records for four years. A service bureau handles all of this for you.
Benefit from an established track record
America's Tax Professionals has maintained IRS transmitter authorization continuously since 2001 -- 25 years of uninterrupted service. A new applicant for transmitter status has zero history. Many clients, especially businesses and higher-income individuals, prefer to know their returns are transmitted through a provider with a long, stable track record.
For most independent preparers, a service bureau makes sense
If you are a new preparer, a solo practitioner, or a small firm doing under 200 returns per year, a service bureau relationship is almost always simpler and lower-risk than managing your own transmitter authorization. The trade-off is that you are not the direct transmitter of record, but you gain speed to market, lower compliance burden, and access to a firm with deep IRS regulatory experience.
What Requirements Apply to a Tax Service Bureau (Transmitter)?
If a company operates as a tax service bureau, it must meet rigorous IRS requirements. Here is what ATP maintains to stay IRS-authorized -- and what you should look for when evaluating any service bureau partner.
IRS transmitter application and annual renewal
ATP submits to the IRS and is re-approved annually as an e-file transmitter. This is not a one-time credential. The IRS reviews ATP's operational compliance, financial stability, and security practices each year. ATP's approval since 2001 reflects 25 consecutive annual renewals, demonstrating sustained compliance with IRS standards.
Suitability background check
ATP has undergone and passed the suitability check required of all transmitter applicants: background, credit, tax compliance, and security review. This signals that the transmitter is trustworthy and stable.
IRS-approved software
ATP uses CCH TaxWise by Wolters Kluwer, which has passed IRS Assurance Testing. This ensures that returns transmitted through ATP meet IRS file format and validation requirements.
Written Information Security Plan (WISP)
Per IRS Publication 4557 and the FTC Safeguards Rule, ATP maintains a WISP covering data encryption, access controls, audit logs, incident response, and vendor management. This protects your clients' personal information as it moves through ATP's systems to the IRS. For details on data security for tax preparers, see our WISP data security guide.
Section 7216 data sharing rules apply to service bureau arrangements
When you use a service bureau, you are sharing client tax return information with the transmitter so it can send your returns to the IRS. That sharing is a disclosure covered by IRC Section 7216, the federal law governing how tax preparers can disclose client tax return information. The transmission-for-preparation carve-out in Treas. Reg. 301.7216-2 covers the core transmission function, but preparers should understand what Section 7216 requires any time client data moves outside their direct control.
What remains your responsibility as the ERO
Regardless of your EFIN arrangement, you must hold an active PTIN, obtain client signatures on Form 8879 before transmission, and be responsible for the accuracy and legal compliance of every return you prepare. ATP's role is transmission only, not preparation.
What Does America's Tax Professionals Offer as Your Service Bureau?
ATP is more than a transmitter. We are a full-service partner for independent tax preparers and small offices.
IRS-authorized e-file transmitter since 2001
ATP has maintained continuous IRS e-file transmitter authorization for 25 years. We transmit federal and state returns for all 50 states. This authorization is renewed annually by the IRS and represents a quarter-century of uninterrupted compliance.
CCH TaxWise software reseller
ATP is an authorized reseller of CCH TaxWise by Wolters Kluwer, the same professional-grade software used by high-volume tax offices and national firms. A TaxWise purchase is optional if you are using ATP solely for transmission, but most of ATP's clients combine TaxWise software with ATP's transmission service.
Bank products and refund transfer programs
ATP partners with banking institutions to offer refund transfer programs and other bank products to your clients. These services can boost client satisfaction and generate additional revenue for your practice.
Dedicated support
ATP provides customer support to help you troubleshoot transmission issues, understand IRS acknowledgment files, and stay current with IRS requirements. For pricing, support hours, and specific details on ATP's service packages, contact ATP directly at 224-388-1774 or visit our contact page.
How to Work with America's Tax Professionals as Your Tax Service Bureau
Starting with ATP is straightforward. Here is the step-by-step process to begin using ATP as your IRS-authorized transmitter.
Obtain your PTIN (and EFIN if applicable)
A PTIN is required for all paid tax preparers. Whether you also need your own EFIN depends on your arrangement with ATP. Some preparers work under ATP's service bureau model without their own EFIN; others operate with their own EFIN as an ERO and use ATP for transmission only. Contact ATP to determine which model fits your practice. See our PTIN guide and EFIN guide for background on both credentials.
Enroll with ATP as your transmitter
Contact ATP directly to enroll as a user of ATP's transmission service. Call 224-388-1774 or visit our contact page. ATP will walk you through setup, answer questions, and provide pricing.
Choose your software setup
Decide whether to use CCH TaxWise professional tax software through ATP or use your own tax software and transmit through ATP. If you use your own software, it must output IRS-approved file formats. ATP can advise on compatibility.
Optionally enroll in bank products
If you want to offer refund transfer or other bank products to your clients, ATP's partners can help you enroll. This step is optional but often increases client satisfaction.
Prepare returns and obtain Form 8879 signatures
Prepare your client's return in your tax software. Have your client sign Form 8879 (IRS e-File Authorization) before transmission. This form proves the taxpayer consents to e-filing and grants you, as the ERO, authority to transmit on their behalf.
Submit the return to ATP for transmission
Export your return in ATP-compatible format and submit it through ATP's transmission portal. ATP validates the file, checks for required forms and documentation, and transmits to the IRS.
Access IRS acknowledgment files
ATP retrieves IRS acknowledgment files and makes them available to you. These files confirm whether the IRS accepted or rejected your return and provide error details if needed.
File as Your Own Transmitter vs. Use ATP as Your Transmitter
The table below compares applying for your own IRS transmitter authorization versus using ATP as your transmitter.
| Factor | Use ATP as Your Transmitter | Apply for Your Own Transmitter Authorization |
|---|---|---|
| Your own EFIN required | Not required in all arrangements (contact ATP) | Yes (your own EFIN as ERO) |
| Transmitter IRS application | No. ATP holds it. | Yes, 45+ day process |
| Transmitter suitability check | Not required (ATP passed it) | Required (credit, tax, criminal) |
| Annual transmitter compliance | Managed by ATP | On you (software updates, Assurance Testing, records) |
| IRS authorization history | ATP's 25-year track record | New credential, no track record |
| Time to start transmitting | Start quickly after enrollment | 45+ days minimum |
| Best fit | New, small, and mid-size practices (under 200 returns/year) | High-volume practices (200+ returns/year) or firms that want to offer transmission to other preparers |
If you are not sure which path is right for you, contact ATP at 224-388-1774. Our team can discuss your practice size, volume, and goals and recommend the best fit.
Common Questions About Using a Tax Service Bureau
Do I still need my own EFIN if I use ATP as my transmitter?
It depends on your arrangement. ATP supports two models: preparers who hold their own EFIN as EROs and use ATP solely for the transmission step, and preparers who work under ATP's service bureau arrangement without their own EFIN. A PTIN is always required for paid preparers. Whether you need your own EFIN depends on which model applies to your situation. Contact ATP at 224-388-1774 to discuss. If you do need your own EFIN, see our EFIN application guide.
If ATP transmits my client's return and the IRS rejects it, who is responsible?
As the ERO, you are responsible for the accuracy of the return you prepared. If the IRS rejects it due to errors in the return data, that is a preparer error. If the IRS rejects it due to a transmission format problem attributable to ATP, ATP is responsible. In practice, ATP validates returns before transmission to catch format issues before they reach the IRS.
Does ATP require me to buy TaxWise software?
No. TaxWise is optional. If you already use other tax software (Drake, ProSeries, etc.) that outputs IRS-compliant file formats, ATP may be able to transmit your returns. Contact ATP to confirm compatibility with your current software.
What if I do fewer than 10 returns per year? Do I still need a transmitter?
IRS regulations require e-filing only if you prepare more than 10 returns per year. If you do 10 or fewer, you may file paper returns on behalf of your clients. However, many preparers offer e-filing even for small volumes because clients prefer it and the IRS processes e-filed returns faster. If you expect to grow beyond 10 returns, setting up a service bureau relationship early is a practical move.
How does ATP keep my client data secure?
ATP maintains a Written Information Security Plan (WISP) per IRS Publication 4557 and the FTC Safeguards Rule. This covers data encryption in transit and at rest, role-based access controls, audit logging, and incident response protocols. For details on data security practices for tax preparers, see our WISP data security guide.
Ready to Use ATP as Your Tax Service Bureau?
Contact ATP today to discuss your practice's needs and get started with IRS-authorized transmission for all 50 states. Call 224-388-1774 or visit our e-file services page for more information.