CPA email marketing: the tax calendar writes the schedule, and the client list from returns has rules of its own
Email marketing for accountants and CPA firms: the emails worth sending through the year, how to grow the list, and the IRS and CAN-SPAM rules on using client data and soliciting new work.
Published by AI Knows Us · Updated 21 October 2026
CPA email marketing works when it follows the tax calendar your clients already live by: a document request before filing season, deadline reminders, a short note when the law changes, and a plain monthly or quarterly newsletter between seasons. Send from a named partner, write one topic per email, and keep a separate list for advisory and business clients. Before you use a list built from tax returns, check two federal rules most marketing guides skip: the IRS regulations under section 7216 limit what a tax return preparer may email that list about, and Circular 230 sets standards for solicitation by anyone who practices before the IRS.
What email does for an accounting firm
An accounting firm's best new business usually comes from existing clients: referrals, extra services and clients who move from compliance work to advisory work. Email is the cheapest way to stay in front of them between the two or three moments a year when they need you. It also cuts the admin. A well-timed document request email saves the firm dozens of chasing calls in the busiest weeks.
For a firm that wants new clients, email does a different job. It turns people who downloaded a checklist or attended a webinar into consultations, slowly, over months. Both jobs matter, but they need different lists.
The tax calendar email plan
Map your emails to the dates your clients already care about. A small firm can run this whole plan with about one email a month:
| When | Audience | |
|---|---|---|
| Before filing season | What to gather, the organizer, the upload link, the cut-off for your earliest slots | All individual tax clients |
| During filing season | Reminder of missing documents, booking link | Clients who have not uploaded |
| Before each deadline | The deadline, what happens if they miss it, whether to file an extension | Clients with returns still open |
| Before each estimated payment date | A reminder for clients who pay estimates | Self-employed and business clients |
| After a law change | What changed, who it affects, what to do | Only the clients it affects |
| Off season | Planning ideas, year-end moves, a case story without names | Business and advisory list |
Write each deadline email from your own engagement calendar, and confirm the dates against the IRS and your state each year before you schedule them. A wrong date in a firm-wide email is worse than no email.
Using a client list built from tax returns
This is the rule that separates accountant email marketing from email marketing for almost any other profession. Section 7216 of the Internal Revenue Code limits how tax return preparers use tax return information, and the regulations spell out what a firm may do with its own client list.
Under 26 CFR 301.7216-2(n), read on 21 October 2026, a tax return preparer may compile a separate list of names, mailing addresses, email addresses, phone numbers, entity classification and return form number of taxpayers whose returns it prepared. That list 'may be used by the compiler solely to contact the taxpayers on the list for the purpose of providing tax information and general business or economic information or analysis for educational purposes, or soliciting additional tax return preparation services.' The same paragraph says: 'The list may not be used to solicit any service or product other than tax return preparation services.'
So a newsletter about tax changes, or an email inviting last year's clients back for this year's return, sits within that permission. An email pitching wealth management, insurance or a loan to that same list is a different use. For that, 26 CFR 301.7216-3 requires a written consent that is 'knowing and voluntary', and if the preparer intends to use return information to generate solicitations for other products or services, 'the consent must identify each specific type of product or service'. Conditioning the tax work on the client signing that consent makes it involuntary.
The practical answer for most firms: keep the tax list for tax and education, gather separate opt-ins for advisory and other services, and record where each address came from. This is general information, not legal advice. Your firm's counsel or your state society can tell you how it applies to your engagement letters.
Circular 230 and solicitation emails
CPAs, enrolled agents and attorneys who practice before the IRS are covered by Circular 230. Its solicitation section, 31 CFR 10.30, read on 21 October 2026, says a practitioner may not use any public communication or private solicitation containing 'a false, fraudulent, or coercive statement or claim; or a misleading or deceptive statement or claim'. Three more points from the same section shape email:
- An uninvited solicitation must 'clearly identify the solicitation as such and, if applicable, identify the source of the information used in choosing the recipient.'
- Fee information may be sent by email. A practitioner may publish fixed fees for routine services, hourly rates, fee ranges and the fee for an initial consultation.
- For e-commerce communications, the practitioner 'must retain a copy of the actual communication, along with a list or other description of persons to whom the communication was mailed or otherwise distributed' for at least 36 months. Your email platform's campaign archive and send logs are the natural place to keep this, so do not delete old campaigns.
The section also says a practitioner may not keep contacting a prospect who has said they do not want to be solicited. Treat an unsubscribe as exactly that.
CAN-SPAM, which applies on top
The CAN-SPAM Act, 15 U.S.C. 7704, requires a commercial email to give clear notice of how to opt out, to include a valid physical postal address, and, unless the recipient gave prior affirmative consent, to identify itself as an advertisement. Opt-outs must be honored within 10 business days. A document request for a return the client already engaged you to prepare is closer to a transactional message, but a newsletter that promotes your services is commercial, so build every newsletter template with the footer filled in.
Growing the list without buying one
- Client portal and engagement letters. Add a clear, separate opt-in for the newsletter and for advisory updates.
- Checklists people actually want. A small business year-end checklist, a new business tax setup list, a document list for a first-time filer. Each one asks for an email.
- Webinars and talks for local business groups, with registration by email.
- Referral partners. Attorneys, bankers and financial planners who send you clients also want your plain-English updates.
Each of these lists is built for marketing from the start, so it carries none of the section 7216 limits that apply to the list compiled from returns. Our page on SEO for accountants covers the website pages that feed those sign-ups.
Questions about email marketing for accountants
How often should a CPA firm send marketing emails?
About once a month, plus deadline reminders in season. Clients read accountant emails when they are timely and short, and ignore them when they feel like filler.
Can an accountant email clients about services other than tax preparation?
Not to a list compiled from tax returns without the client's written consent under 26 CFR 301.7216-3, which must name each type of product or service. Build a separate opt-in list for advisory and other services.
What should an accounting newsletter include?
One main topic, such as a law change or a planning idea, written in plain words, plus key dates and one call to action, usually a booking link.
Do CPA firms need to keep copies of marketing emails?
Under Circular 230, 31 CFR 10.30(c), a practitioner must keep a copy of each e-commerce communication and a description of who received it for at least 36 months after the last use.
Should a CPA buy a list of local business owners?
No. Bought lists bring complaints, harm delivery to real clients, and an uninvited solicitation has to meet the Circular 230 identification rules anyway.
Where a business owner looks before they email you
Your newsletter keeps existing clients close. A business owner looking for a new accountant often starts by asking an assistant which CPA firm nearby knows their industry or handles multi-state returns, and that answer is built from directories, reviews and firm websites. Try that question for your city and your best-fit client and see which firms are named. AI Knows Us tracks those answers for professional firms, and our accountancy and law firm readings show the questions worth asking.