Find the code in the corner of the notice, and get what the notice itself never gives you: plain English, the deadline that matters, the options ranked — and the response letter drafted in 20 seconds. The scary envelope becomes a 15-minute task.
Codes like 570, 971 and 846 on your account transcript tell you where your refund or balance stands. Paste the transcript into the free decoder, or look up a code.
The code is in the corner — CP2000, CP14, LT11. Its page tells you what's actually happening and how many days you have.
Agree, dispute, or arrange payments — each page ranks the options and links the exact forms.
Notice-specific arguments and the enclosure checklist, in ~20 seconds. Review, fill placeholders, mail certified.
A free toolkit for the moment an IRS envelope lands: plain-English explanations of every common notice — the real meaning, the deadline, the options — and an AI drafter that writes the response letter for your specific notice and situation.
Regular taxpayers and small-business owners handling their own IRS mail — the people who don't have a tax attorney on retainer but can absolutely mail a well-organized response letter.
No — it's reference information and self-help document preparation, like a smarter form template. You review every draft, fill in your own details privately, and decide what to send. Large amounts or fraud allegations belong with a CPA, EA or tax attorney.
The tools are designed around placeholders — [YOUR NAME], [SSN LAST 4] — so your identifiers never enter the system. Generation inputs are processed transiently and never stored.
CP2000 (Proposed Changes — Income Mismatch) · Letter 12C (Information Missing From Your Return) · CP3219A (Statutory Notice of Deficiency — 90 Days) · CP2501 (Income Discrepancy — Initial Inquiry) · CP3219N (Deficiency From an Unfiled Return) · Letter 4800C (Withholding or Credits Questioned) · Letter 566 (Audit Selected — Send Documents) · CP2057 (Self-Correct — File an Amended Return) · Letter 525 (Examination Report — 30-Day Letter)
CP14 (First Notice — Balance Due) · CP504 (Notice of Intent to Levy — State Refund) · CP523 (Installment Agreement in Default) · CP504B (Business Intent to Levy) · CP503 (Second Reminder — No Response Received) · CP501 (Reminder — Balance Due) · CP71C (Annual Balance Reminder) · LT11 (Final Notice of Intent to Levy — Hearing Rights) · CP90 (Intent to Seize Assets — Hearing Rights) · CP521 (Installment Payment Due) · Letter 1058 (Final Notice of Intent to Levy (Revenue Officer)) · LT38 (Collection Notices Resuming) · Letter 3172 (Federal Tax Lien Filed)
CP22A (Changes Processed — Balance Due) · CP12 (Return Corrected — Refund Changed) · CP11 (Return Corrected — Balance Due) · CP23 (Estimated Payments Don't Match — Balance Due) · CP49 (Refund Applied to Other Taxes) · CP13 (Return Corrected — No Change in Balance) · CP21A (Changes You Requested — Balance Due) · CP24 (Estimated Payments Don't Match — Refund) · CP60 (Payment Removed From Your Account)
Letter 105C (Claim Disallowed) · Letter 4464C (Return Under Review — 60 Days) · CP59 (No Record of Your Tax Return) · CP88 (Refund Frozen — Delinquent Return) · CP05A (Refund Held — Documents Requested) · CP05 (Refund Held for Review) · CP63 (Refund Held — Unfiled Return on File) · Letter 106C (Claim Partially Disallowed) · CP80 (Credit on Account — No Return Filed) · CP518 (Final Notice — Unfiled Return)
CP01A (Your Identity Protection PIN) · Letter 5071C (Verify Your Identity) · Letter 4883C (Verify Identity by Phone) · Letter 5747C (Verify Identity In Person)
CP2100 (Payee TIN Mismatch — B Notice) · CP161 (Business Balance Due) · CP210 (Business Return Adjusted) · CP220 (Adjustment Made — Balance Due (Business))
IRS Penalties Explained · Failure to File Penalty · Failure to Pay Penalty · Failure to Deposit Penalty · Underpayment Penalty (Estimated Tax) · Accuracy-Related Penalty (IRC 6662) · 1099 Late Filing Penalty · Trust Fund Recovery Penalty · S Corp Late Filing Penalty (1120-S) · Partnership Late Filing Penalty · Form 990 Late Filing Penalty · Late S Corp Election · First-Time Penalty Abatement · Reasonable Cause Penalty Abatement · IRS Penalty & Interest Calculator
Form 843 penalty abatement · IRS payment plans · Offer in compromise · CDP hearing (Form 12153)
All transcript codes + free decoder · Code 971 (Miscellaneous transaction (e.g., Notice issued)) · Code 570 (Additional account action pending) · Code 846 (Refund issued) · Code 766 (Credit to your account) · Code 150 (Tax return filed) · Code 806 (W-2 or 1099 withholding) · Code 290 (Additional tax assessed) · Code 810 (Refund freeze) · Code 768 (Earned income credit) · Code 571 (Resolved additional account action) · Code 420 (Examination of tax return) · Code 977 (Amended return filed) · Code 811 (Removed refund freeze) · Code 776 (Interest credited to your account) · Code 421 (Closed examination of tax return) · Code 424 (Examination request indicator) · Code 922 (Review of unreported income) · Code 470 (Taxpayer claim pending) · Code 826 (Credit transferred out to another tax period) · Code 706 (Credit transferred in from another tax period) · Code 836 (Credit elect transferred out to next year) · Code 898 (Refund applied to non-IRS debt) · Code 740 (Undelivered refund check returned) · Code 291 (Abatement of prior tax assessment) · Code 300 (Additional tax or deficiency assessment by examination) · Code 960 (Appointed representative) · Code 610 (Payment with return) · Code 670 (Payment) · Code 166 (Penalty for late filing of tax return) · Code 276 (Penalty for late payment of tax) · Code 196 (Interest charged for late payment) · Code 176 (Penalty for not pre-paying tax) · Code 582 (Lien placed on assets due to balance owed) · Code 530 (Balance due account currently not collectible) · Code 520 (Bankruptcy or other legal action filed) · Code 480 (Offer-in-compromise pending) · Code 460 (Extension of time to file)
IRS response letter generator · Penalty & interest calculator · First-time abatement checker · Transcript decoder