How to Start a Tax Preparation Business: PTIN, EFIN, State Licenses, and Startup Costs (2026 Guide)

PTIN (Preparer Tax Identification Number)

Every individual who prepares or substantially assists in preparing any federal tax return for compensation must have a PTIN. Apply online at irs.gov/ptin. Required before your first paid client. Each individual preparer needs their own — a firm does not share one PTIN.

EFIN (Electronic Filing Identification Number)

Required for any paid preparer who files 11 or more federal returns electronically in a calendar year. Issued at the firm level (one EFIN per office location). Apply through the IRS e-Services portal. The IRS conducts a suitability check on all principals — tax compliance history, criminal background. Apply before filing season begins.

Annual Filing Season Program (AFSP)

The AFSP is a voluntary IRS program for non-credentialed preparers (those who are not EAs, CPAs, or attorneys). Participating preparers complete 18 hours of IRS-approved continuing education each year: 6 hours of federal tax law topics, 2 hours of ethics, and 10 hours of federal tax law updates. Upon completion and signing the Circular 230 compliance statement, participants receive an AFSP Record of Completion.

Benefits of completing the AFSP: Your name appears in the IRS public directory of tax return preparers at irs.gov — a directory that prospective clients actively search. You also gain limited representation rights before the IRS (see below). For a new preparer, AFSP participation is a low-cost way to signal professionalism and capture clients who specifically seek credentialed preparers.

Circular 230 — practice before the IRS

Circular 230 (31 CFR Part 10) governs who may practice before the IRS and the standards of conduct required of those practitioners. "Practice before the IRS" includes preparing and filing documents, corresponding with the IRS, and representing taxpayers in matters before the IRS.

• ›Unlimited practice rights: Enrolled Agents, CPAs, and attorneys may represent any taxpayer before any IRS division (Examination, Appeals, Collections).
• ›Limited practice rights (AFSP): AFSP participants may represent clients only in examinations of returns they personally prepared, and only before IRS Examination — not Appeals or Collections.
• ›PTIN-only preparers: No IRS representation rights beyond basic correspondence on preparation matters.

Circular 230 also prohibits preparers from making false statements to the IRS, charging unconscionable fees, negotiating client refund checks, or engaging in disreputable conduct. Violations can result in censure, suspension, or disbarment from IRS practice.

Due diligence requirements — IRC §6695(g)

Under Internal Revenue Code §6695(g), paid preparers face a $560 penalty per failure, per return for failing to meet due diligence requirements on four specific credits and filing statuses: the Earned Income Tax Credit (EITC), Child Tax Credit (CTC) and Additional Child Tax Credit (ACTC), American Opportunity Tax Credit (AOTC), and Head of Household (HOH) filing status.

What due diligence requires in practice: Complete and retain IRS Form 8867 (Paid Preparer's Due Diligence Checklist) for each return claiming any of these benefits. Ask clients questions to determine eligibility. Document the answers and retain your notes for three years. You cannot simply accept client statements at face value — you must apply knowledge any reasonable preparer would have and flag inconsistencies.

Example: If a client claims three children for EITC but mentions they live with their ex-spouse, due diligence requires you to document that you investigated the custody situation. Failure to do so and the resulting $560 per-credit penalty adds up fast — a single return claiming EITC, CTC, AOTC, and HOH could carry a $2,240 preparer penalty if none of the four due diligence requirements are met.

Enrolled Agent (EA) — the tax preparer's credential

The EA is the only federal credential specifically designed for tax practitioners. The Special Enrollment Examination (SEE) has three parts: Part 1 — Individuals (Form 1040, deductions, credits, depreciation); Part 2 — Businesses (partnerships, S-corps, C-corps, payroll, excise); Part 3 — Representation, Practices, and Procedures (Circular 230, IRS collection, penalties, appeals). Each part costs $203 and can be taken at Prometric testing centers nationwide. Passing scores are valid for two years, giving you time to complete all three parts.

After passing all three parts, apply for EA enrollment at Pay.gov and pay the enrollment fee (approximately $250 for the first three-year cycle). EAs must then complete 72 hours of CE every three years, including 2 hours of ethics per year.

ACAT credentials — Accredited Tax Advisor and Preparer

The Accreditation Council for Accountancy and Taxation (ACAT) offers two tax-specific credentials: the Accredited Tax Preparer (ATP) for preparers focused on Form 1040 individual returns, and the Accredited Tax Advisor (ATA) for practitioners who also handle tax planning and business taxation. Both require passing an examination and meeting experience requirements (three years of tax preparation experience for the ATA). ACAT credentials require 24 hours of CE annually. They do not confer IRS representation rights beyond the PTIN, but they provide a professional signal and are recognized by the National Society of Accountants.

State-specific licensing: California CTEC and Oregon Board

California and Oregon are the only two states with mandatory preparer licensing beyond the federal PTIN. California's CTEC registration requires 60 hours of qualifying education initially and 20 hours of CE annually. Oregon's Board of Tax Practitioners requires an 80-hour course plus examination for the Licensed Tax Preparer credential, and additional experience and examination for the higher Licensed Tax Consultant credential. Both states exempt CPAs, EAs, and attorneys from their state licensing requirements.

Practice management and client portal software

Beyond tax software, most professional firms use a client portal for secure document exchange and a practice management system for workflow and billing. Leading platforms include:

• ›TaxDome: All-in-one practice management — client portal, e-signatures, workflow automation, billing, CRM. Popular with solo preparers and small firms. ~$600–$1,200/year.
• ›Canopy: CRM and client management platform built for tax professionals. Strong IRS transcript integration. ~$1,200–$2,400/year.
• ›Karbon: Workflow and collaboration for accounting firms. Better for multi-employee practices. ~$1,800–$3,600/year.
• ›ShareFile / SmartVault: Secure document portals for client document exchange. ~$300–$600/year.

Bank products: refund transfers and refund advances

Refund Transfer (RT) products let clients pay your preparation fee out of their refund rather than up front. The IRS direct deposit goes to a temporary bank account, the preparation fee is deducted, and the remainder is sent to the client. Refund Advances allow clients to access a portion of their expected refund before the IRS issues it. Major bank product providers include Refund Advantage (EPS Financial), Republic Bank, and TPG (Santa Barbara Tax Products Group).

Compliance requirements: To offer bank products you must have an active EFIN in good standing. Your software must be integrated with the bank product provider. Each provider has their own suitability requirements and may conduct background checks on the firm. Read the terms carefully — some bank products carry marketing restrictions on how you can advertise advances to clients.

Written Information Security Plan (WISP)

Mandatory for all tax preparers under the FTC Safeguards Rule (16 CFR Part 314). The WISP must identify client data types and storage locations, document safeguards for each identified risk, establish access controls and encryption standards, address remote access security, cover incident response including IRS Stakeholder Liaison notification, and be reviewed annually. The IRS provides a free sample WISP template at irs.gov specifically designed for tax preparers.

IRS Publication 4557 — Safeguarding Taxpayer Data

IRS Publication 4557 provides specific technical guidance for tax professionals on protecting client data. Key requirements include: multi-factor authentication on all tax software and email accounts, encrypted storage for any device holding client data, encrypted email or secure portal for document exchange (plain email is not acceptable), automatic screen locks on workstations, and secure destruction of physical documents containing taxpayer information. Publication 4557 is updated regularly and should be reviewed each tax season.

E&O insurance and professional liability

Errors and omissions (E&O) insurance covers claims arising from preparation errors, missed deadlines, and negligent advice. Coverage limits for solo preparers typically run $1M–$2M per occurrence. Annual premiums for a solo practitioner handling individual returns range from $500–$1,500. Firms handling complex business returns or high-net-worth clients should carry $2M+ limits. Specialty providers include Hiscox, CAMICO, and the NATP group plan. General business liability policies exclude professional services — obtain a specific E&O endorsement or standalone policy.

In addition to E&O: carry a cyber liability policy ($500–$1,000/year for a solo preparer) to cover breach response costs, notification expenses, and regulatory fines from a data security incident. Tax preparers are a high-priority target for phishing, ransomware, and credential theft.

Record retention requirements

IRS regulations require paid preparers to retain copies of all returns they prepare, along with the information used to prepare them, for at least three years from the return due date or filing date, whichever is later. As a practical matter, most tax professionals retain records for seven years to cover the IRS's extended statute of limitations for fraud, and to have documentation available in the event a client is audited years after preparation.

• ›Copy of each completed return (electronic or paper): 3 years minimum, 7 years recommended
• ›Due diligence worksheets (Form 8867 and supporting notes): 3 years from return due date
• ›Engagement letters and client agreements: 7 years
• ›Source documents (W-2s, 1099s) — return originals to clients, but retain copies if you relied on them

Per-return pricing (2026 market rates)

Revenue targets by practice size

• ›First-year preparer (50–100 returns): $10,000–$35,000 in seasonal revenue. Build volume, gather reviews, refine processes.
• ›Established solo preparer (200–350 returns): $60,000–$150,000 in seasonal revenue.
• ›Credentialed EA/CPA solo (300–500 returns, complex work): $100,000–$200,000 seasonal revenue.
• ›Small firm (3–5 preparers): $250,000–$600,000 in seasonal revenue.

Year-round revenue: breaking the seasonality trap

Roughly 75–80% of individual return revenue is earned between January 15 and April 15. Building year-round revenue streams is the difference between a seasonal side hustle and a real business. Common year-round services offered by tax prep businesses:

• ›Monthly bookkeeping: $250–$800/month per small business client. 20 bookkeeping clients at $400/month = $96,000/year in recurring revenue.
• ›Quarterly payroll and estimated taxes: $150–$400/quarter per business client.
• ›Tax planning engagements: $500–$2,500/year for proactive year-round tax minimization strategy for small business owners and high earners.
• ›IRS resolution and representation: $150–$350/hour for EA-authorized representation in audits, installment agreements, and OIC negotiations.
• ›Notary services: Low-effort add-on for tax-adjacent document work.

WISP minimum requirements

• ›Designate a security coordinator (you, if sole practitioner)
• ›Identify client data types, storage locations, and access controls
• ›Document encryption for stored data and transmitted returns
• ›Multi-factor authentication for tax software and email
• ›Incident response plan including IRS Stakeholder Liaison notification
• ›Annual review and update