The one-sentence answer
File an 8821 when you need to see. File a 2848 when you need to act.
Everything below is an expansion of that sentence — but if you're skimming before lunch, that's the rule.
Side by side
Form 2848 — Power of Attorney
- Authority type: full representation
- Who can be rep: attorneys, CPAs, EAs, enrolled actuaries, ERPAs, family members, and other Circular 230–eligible categories
- Can call IRS? Yes
- Can negotiate IAs, OICs, abatements? Yes
- Can sign documents for client? Where authorized on line 5a, yes
- Pulls transcripts? Yes, once on CAF
- CAF effect: establishes rep relationship
- Rejection surface: higher — Part II designation, jurisdiction, broad year ranges
- Typical use: active case work
Form 8821 — Tax Information Authorization
- Authority type: information only
- Who can be designee: anyone — individual, firm, corporation, organization
- Can call IRS? No (information request only)
- Can negotiate? No
- Can sign for client? No
- Pulls transcripts? Yes, once on CAF
- CAF effect: records authorized disclosure
- Rejection surface: lower — no Part II, no designation letters
- Typical use: monitoring, prospecting, transcript-only engagements
Feature-by-feature
| Attribute | Form 2848 | Form 8821 |
|---|---|---|
| Authority granted | Act & represent | Inspect / receive info |
| Who may be named | Circular 230–eligible categories | Any individual or entity |
| Part II designation letter required | Yes (a–r) | No |
| Jurisdiction / bar / license number | Required in Part II | Not required |
| Talk to IRS / PPS | Yes | No |
| Receive notices | Yes (if line 2 box checked) | Yes (if line 5 box checked) |
| Sign agreements / consents | Where listed on 5a | No |
| Pull transcripts via TDS / A2A | Yes | Yes |
| Retention/revocation of prior auths | Line 6 | Line 5 retention box |
| Taxpayer signature required | Yes | Yes |
| Designee/rep signature required | Yes (Part II) | No |
| Joint returns | Separate form per spouse | Separate form per spouse |
| Max prospective years | 3 years past signature year | 3 years past signature year |
| "All years / all taxes" OK? | No | No |
| Submission channels | Tax Pro Account, online submission, fax, mail | Tax Pro Account, online submission, fax, mail |
| Typical CAF sync (online) | 1–5 business days | 1–5 business days |
Decision tree
Answer each question from the top. Stop at the first leaf that fits.
Common tax-pro patterns
Pattern 1 — Prospect workup
Lead comes in describing "a mess" with the IRS. You need transcripts to quote accurately, but the prospect hasn't signed an engagement.
- File 8821 covering the relevant 1040 years (and 941 periods if it's a payroll matter)
- Pull Account Transcripts, Wage & Income, Record of Account
- Build a scope-of-work proposal based on real numbers, not the client's memory
- If the prospect signs the engagement, file a 2848 to replace the 8821 (or alongside — your call)
- If they ghost, your 8821 authorization naturally ages out as prior years cycle past — no cleanup required
Pattern 2 — Transcript monitoring for existing clients
You keep 8821s on file for the prior 3 years and the next 3 years, and pull transcripts quarterly (or weekly for high-risk clients). New TC 922, TC 420, TC 971 action codes, TC 520, TC 530 — whatever your trigger set — surface in the notice report before the client's notice arrives in the mail.
This is pure value add and a retention tool. You don't need 2848 for it; 8821 is the right instrument.
Pattern 3 — Active resolution case
Engagement signed, you're negotiating an IA or OIC, and you need to call PPS, send letters, and sign agreements. 2848 is mandatory; 8821 alone won't cut it.
- File a 2848 covering every year, period, and tax type in scope
- Line 5a — check "authorize disclosure to third parties" if you may loop in a co-counsel or specialist
- Line 6 — usually leave unchecked unless you know a prior rep should stay on the case
Pattern 4 — Business client with a payroll problem
The TFRP is being proposed against officers. File:
- 2848 for the entity (covers 941 periods, Form 940 if applicable)
- 2848 for each officer personally (covers 1040 years and Civil Penalty for relevant 941 periods)
Four forms is not unusual for a single TFRP case with two officers — entity 2848, officer-A 2848, officer-B 2848, plus any 8821 monitoring you're keeping in place.
Pattern 5 — Third-party disclosure (one-time)
A lender needs to verify the client's tax compliance for a mortgage. Use 8821 with line 4 checked (specific use not recorded on CAF) and the lender's name and address in line 5. This keeps the disclosure off your CAF and limits it to the stated purpose.
Edge cases that trip people up
"I filed a 2848, why can't I pull transcripts?"
Most likely: CAF hasn't synced yet (wait 5 business days for online submissions), or line 4 was checked and the authorization wasn't recorded on CAF, or line 3 year coverage doesn't match what you're trying to pull. Walk through each before calling PPS.
"I filed an 8821, now the client wants me to negotiate"
File a 2848. An 8821 does not upgrade to a 2848 — they're different instruments with different authority. Filing a 2848 after an existing 8821 does not revoke the 8821 automatically (they cover different authority types), so you can run them in parallel if useful.
"I filed both, then a new rep filed a 2848"
A new rep's 2848 without the line-6 retention box checked revokes prior 2848s for the same matters and periods. It does not revoke a prior 8821, which tracks separately. Know this so you don't accidentally lose monitoring access when you hand off a case.
"Can I file 8821 with a broad scope covering a whole firm?"
You can name a firm or organization as designee on 8821. You cannot write "all years / all taxes" for the matters. Still enumerate line 3 with specific tax forms and periods.