A tax attorney and a CPA can both build a career in tax — and both can, on conditions the IRS's practice rule sets, represent clients before the IRS — but they are different credentials and different careers.
The tax attorney vs CPA comparison starts there: the attorney is a lawyer, with the law degree and state license lawyers typically need — the license usually earned by passing a bar exam — while the CPA sits in the accounting profession, with the CPA Exam as the credential exam on that side.
Here is what each does, how you qualify, pay, and when you need both.
What a tax attorney does vs what a CPA does
Start with the overlap, because it is genuine: before the IRS, the two credentials stand on the same footing.
Under Circular 230 (31 CFR 10.3), attorneys and CPAs who are not currently under suspension or disbarment may practice before the IRS by filing a written declaration — and enrolled agents may also practice.
A tax attorney is a lawyer whose practice centers on tax law: advising clients on how the tax law treats their decisions and transactions, and representing them when a tax authority disputes a position.
The planning and controversy tracks, the employers and the career path are covered in full on our tax attorney guide; this page stays on the comparison itself.
The CPA sits in the accounting profession rather than the legal one.
The exam on that side of the comparison is the CPA Exam rather than a bar exam, and tax is one of the directions an accounting career can concentrate in.
Same subject matter, different professions — which is why the real comparison comes down to credentials, pay and practice rights.
The credentials compared: a state law license vs the CPA Exam
The attorney route is the one the BLS describes for lawyers: a law degree and a state license, which usually requires passing a bar examination.
That license is the entry to legal practice, and the tax specialization builds on top of it rather than replacing it.
The CPA route runs through the CPA Exam, whose structure is specific.
There are three Core sections — AUD, FAR and REG — plus one Discipline section the candidate chooses from BAR, ISC and TCP, and a scaled score of 75 passes a section, per the AICPA's published exam-scoring materials.
The exam is not the whole credential
Tax attorney vs CPA salary, briefly
Like-for-like starts with the same series: the BLS Occupational Outlook Handbook's May 2025 wage data.
For lawyers (SOC 23-1011), the median annual wage was $159,670.
For accountants and auditors — the BLS occupation this page uses for the CPA side — the median was $83,680.
On outlook, the BLS projects the same 5 percent growth for lawyers and for accountants and auditors over 2025–2035.
Read both numbers with their scope.
The lawyer median excludes self-employed lawyers and owners and partners of unincorporated businesses, so it does not describe solo or partner income — and neither figure is a tax-specialty number, because BLS does not break lawyers out by practice area and the accountants series covers the whole occupation.
For the role-level view, our tax attorney salary page carries the current figures.
Do you need both? The JD/CPA question
On the requirements this page cites, neither side names the other's credential: the lawyer's entry is a law degree and a state license — the BLS description above — and the CPA Exam structure we cite sets out sections and a passing score, not a law license.
The two tracks are separate, and completing one does not enroll you in the other.
Our research also found no verified figure for how many practitioners hold both, so any claim about how common the JD/CPA combo is should be treated as unproven.
Practice rights are where the question turns practical.
Before the IRS, the combo adds nothing: both credentials already carry the same Circular 230 standing.
In the U.S. Tax Court, the law license is the direct route — the Court admits attorneys who present a certificate of good standing issued within 90 days of applying, while nonattorneys can be admitted only by passing the Court's nonattorney examination under Tax Court Rule 200.
So the decision is about the work, not a checkbox.
If the career you want is legal work — controversy, litigation — the law license is the credential the U.S. Tax Court admits directly, and the IRS practice rule names it too.
If it is the accounting side of tax, the CPA Exam is the credential exam on that side.
Holding both keeps both doors open, and costs both exams.
Where the tax LL.M. fits
The LL.M. is a graduate law degree — U.S. and Canadian students need a JD first, per LSAC — so it sits on the legal side of this comparison rather than the accounting side.
In tax careers it appears as the tax LL.M., the degree pointed at tax study.
What the degree is, who earns it and what it does for a legal career are questions for their own pages: our guide to the LL.M. covers the general question, and the tax LL.M. page takes the tax-specific one, cost included.
For the decision this page is about, the LL.M. is a refinement rather than a fork.
The CPA route and the bar route above are the two entries, and the LL.M. comes after a law degree — not instead of one.
Where to find tax attorney jobs
Lawyer jobs cluster in legal services: the BLS's 2025 employer profile puts legal services at 52 percent of lawyer employment, self-employed lawyers at 11 percent, local government at 8 percent, state government at 7 percent and federal government at 5 percent.
Those shares describe the whole profession rather than the tax specialty — our research found no BLS split of lawyer employment by practice area.
Tax work does sit inside the settings on that list — firm tax groups and boutiques, and the government side of the tax system — but read the shares as the profession's shape, not the specialty's.
If that is the side of the comparison you want, browse current tax attorney jobs on LawFirmHires.
To keep weighing the career itself, the role guide above and our is tax law a good career page take the longer view.
Career information, not legal advice. Licensing and exam requirements change — confirm current requirements with the bar admission authority in your state and with the board that licenses CPAs where you plan to practice.