Guide library

Find the IRS penalty guide closest to your situation.

If you already know part of the problem but not the full answer, use this page to jump to the guide that matches your penalty, form, records question, business situation, or next-step decision.

Start the assessment General next steps

Best use

Use this when you know one part of the issue but not the right guide

Page depth

Most pages here are one click away from this hub

Main paths

Start by penalty type, records, dates, taxpayer situation, or claim decision

Quick answer

Use this page when you know one piece of the problem, but you are not sure which guide fits.

Start with the clue you trust most: the penalty type, the notice or transcript issue, the taxpayer or business type, whether the charge was paid, or whether you need help filing. Then use the matching section below.

Start with the penalty type if you know what the IRS called the charge.
Start with records or dates if the notice or timeline is the real blocker.
Start with the taxpayer or business section if the file involves an entity, partnership, or closed business.
Start with the refund, abatement, and Form 843 section if you are deciding what to file or whether to get help.

Find the section closest to your situation

Start here

Use these first if you are still orienting yourself and need the broad issue, deadline, or next-step framing.

Do you want a step-by-step guide instead of a narrower guide? Use the step-by-step guides if you want an ordered overview for a notice file, a post-filing claim, or a business / closed-business problem. Could you be eligible to review a COVID-period IRS penalty refund claim? Use this if you only know the broad issue and need to check whether the claim may be worth reviewing at all. Why does July 10, 2026 matter for IRS penalty claims? Deadline and Kwong context without overclaiming certainty. What should you do next if this may apply? General follow-up guide for records, transcripts, and next actions.

I know the record, date, or document problem

Use these if the issue is mostly about notices, transcripts, timelines, or what to gather before filing or getting help.

What does an IRS penalty notice actually tell you? Use this if you have a penalty notice in hand and need to know what facts it gives you, what it does not prove, and where it should send you next. What records do you need for Form 843? Practical checklist for notices, transcripts, return copies, payment proof, and authority records. Which IRS date matters: notice date, penalty date, or original due date? Timeline page for date confusion and first-pass claim screening. How do you get the right IRS transcript? Transcript access page for individual and entity paths. What should you look for on an IRS transcript? Focus on the handful of transcript entries and dates that matter first.

I know the charge or penalty type

Use these if you already know what the IRS called the charge and want the narrowest page that matches that category.

Could an IRS late filing penalty be worth reviewing? Use this if the issue is a late-filed return and you need to check the due date, extension history, filing date, and whether the charge was paid or still open. Could an IRS late payment penalty be worth reviewing? Use this if the issue is late payment and you need to check the payment due date, actual payment history, and whether the penalty was paid or still open. Could IRS interest be worth reviewing? Use this if the account shows interest and you first need to sort underpayment interest, overpayment interest, or interest tied to another charge. Could IRS penalties and interest both be worth reviewing? Use this if the notice shows both penalties and interest and you need to separate the line items before choosing a narrower guide. Could an international information return penalty still be worth reviewing? Use this if the file involves Forms 5471, 5472, 3520, 3520-A, 8865, 8938, or another foreign reporting penalty and you need to sort notice path, form family, and paid/open status first.

I know the form, filer type, or tax lane

Use these if you already know the return, filer type, or general tax lane involved and want the narrowest matching page first.

Could a Form 1120-S late filing penalty be worth reviewing? Use this if the penalty belongs to a Form 1120-S filing and you need to sort entity-level late-filing issues, authority, and account status. Could a Form 1065 late filing penalty be worth reviewing? Use this if the penalty belongs to a partnership return and you need to sort entity-level late-filing issues, authority, and account status. Could a Form 941 payroll tax penalty be worth reviewing? Use this if the file is a payroll or employment-tax issue and you first need to separate Form 941-X correction issues from assessed payroll penalties. Is this issue different for an individual return? Use this if the issue belongs to an individual return and you need the general individual filing, payment, and transcript context. Could an LLC issue still be worth reviewing? Use this if the file involves an LLC and you need the entity context before deciding which narrower guide fits. Could an S corporation penalty still be worth reviewing? Use this if the penalty relates to a Form 1120-S filing, an S corporation account, or an LLC taxed as an S corporation. Could a partnership penalty still be worth reviewing? Use this if the file involves a partnership return and you need the partnership-specific context before choosing the narrower guide.

This is a business, closed-business, or authority problem

Use these if the file is messy because of entity status, closed-business facts, signer authority, payroll overlap, or scattered business records.

What if the business is closed or dissolved? Starting page for closed-entity, authority, and old-record problems. Could a closed business IRS penalty still be worth reviewing? Use this if the business is closed, dissolved, sold, or inactive and you need to sort taxpayer identity, authority, and scattered records. Could a dissolved LLC IRS penalty still be worth reviewing? Use this if the dissolved LLC label is hiding the real federal tax path and you need to sort owner-level, partnership, S-corp, or payroll lanes first. Could a closed S corp IRS penalty still be worth reviewing? Use this if the file involves a closed or dissolved S corporation and you need to separate the entity penalty from former shareholder assumptions. Could a closed partnership IRS penalty still be worth reviewing? Use this if the file involves a dissolved or wound-down partnership and you need to separate the partnership penalty from former-partner assumptions. Who can file Form 843 for a closed business? Use this if the main blocker is who can sign, authorize a representative, or file for the closed business now. Do you need business IRS penalty refund help? Use this if the business file is too authority-heavy, payroll-heavy, or expensive to handle on your own. This is a business or closed-business IRS penalty file. What should I sort first? Use this if you want the full business-file step-by-step guide first, including taxpayer, route, authority, and help decisions.

I need help deciding what to file

Use these when the issue is no longer “what happened?” and has become “what do I do with it?”

Do you need an IRS refund claim or an abatement request? Clarifies paid versus unpaid charges and what the IRS is being asked to do. Is Form 843 the usual path for this kind of issue? Use this if you are deciding whether Form 843 fits, whether the claim should preserve an issue, or what facts need to be organized before filing. Do you need a protective claim or a regular refund claim? Use this if you keep seeing protective-claim language and need to know whether the issue is an ordinary refund claim now or a preservation claim tied to an unresolved contingency. Do you need Form 843 or an amended return? Use this if you are not sure whether the return itself needs correction or whether the file is really a separate penalty or interest claim. Should you respond to the IRS notice or file Form 843 first? Use this if a live IRS notice is driving the file and you need to know whether the notice response path or the broader Form 843 path comes first. Can you handle Form 843 yourself or is review worth it? Use this if the main question is whether the file is simple enough for DIY or risky enough to justify review before mailing anything. Do you need help filing Form 843? Use this if you are deciding whether DIY is still reasonable or whether review may be worth it before mailing anything. Do you want expert help instead of handling the next steps yourself? Optional help page for messy, high-value, or time-sensitive cases.

I already filed or need post-filing help

Use these if the claim has already been mailed or the main question is what to do with delay, IRS notices, or a changing post-filing record.

I already filed Form 843. What happens next? Use this if you want the full post-filing step-by-step guide first, including waiting, information requests, denial, approval, supplement, and proof questions. What happens after filing Form 843? Use this if you already mailed Form 843 and need to know what records to keep, how to track the response path, and what delay or denial may mean next. How long does Form 843 take? Use this if the claim is still pending and the main question is what a long wait or no clear response may mean. What if the IRS denied Form 843? Use this if you received a denial or partial denial and need to know what the claim-disallowance letter changes, what dates matter, and what to compare before reacting. Can you supplement or fix a Form 843 claim? Use this if you already filed and then found missing records, vague language, or another defect and need to know whether the issue looks clarifiable or more fundamental. What if the IRS asked for more information on Form 843? Use this if the IRS sent a live request and you need to know what to pull from the letter, how to answer from the record, and when the issue is no longer routine. How do you prove Form 843 was mailed or filed? Use this if the main question is what filing evidence to keep and what to do if the IRS later says it has no record. What if Form 843 was approved? Use this if the IRS allowed something and you need to know whether the result was a refund, credit, balance reduction, offset, or only partial relief. I filed Form 843 before the July 10, 2026 deadline. What do I do now? Use this if the main concern is preserving proof of timely filing, the exact claim package, and the post-deadline response path. Missed the July 10, 2026 deadline. What should I check now? Use this if no timely claim seems to exist and you need to know what timing facts still matter before giving up.

I need transcript or filing basics before anything else

These are practical support pages for users who are stuck before they can even evaluate the claim itself.

How do you get the right IRS transcript? Start here if the real blocker is getting access to the account record. What should you look for on an IRS transcript? Use this after access if you do not know which entries and dates matter. What should you do next if this may apply? Broader step-by-step page if you need the full next-step sequence.

Start with what you already know

Use this page when you know one part of the problem but you are not sure which guide fits.

Choose the section that matches what you already know best:

If you know the broad theory or deadline question, start with the eligibility and July 10 pages.
If you know the penalty type, start with the charge-specific page first.
If you know the notice, transcript, or records problem, start with the diagnostic pages.
If you know the entity or business situation, use the form and business-status section.
If you know the issue has become a Form 843, refund, or abatement decision, use the filing-decision section.

Best fit for common situations

Situation	Best starting page
“I just heard about this and want to know if it might apply”	IRS COVID penalty refund eligibility
“The IRS charged me a late filing penalty”	IRS late filing penalty refund
“I filed, but the IRS says I paid late”	IRS late payment penalty refund
“The account shows interest and I do not know whether it matters”	IRS interest refund or abatement
“The notice shows both penalties and interest and I do not know which one matters”	IRS penalty and interest refunds
“I got a large international information return penalty and do not know whether the issue is notice-driven, paid, or too technical for DIY”	International information return penalty refund
“I got an IRS penalty notice and want the full step-by-step guide, not just one narrow page”	I got an IRS penalty notice: what should I check first?
“I have an IRS penalty notice and do not know what it really proves yet”	IRS penalty notice refund
“I have the notice, but not the timeline”	IRS notice date vs penalty date
“I need to gather the file before I do anything else”	What records do you need for Form 843?
“This is really an S corp, LLC, partnership, or closed business problem”	scorp, llc, partnership, or closed business
“This is a payroll or Form 941 issue and I do not know whether it is a correction or penalty path”	Form 941 payroll tax penalty refund
“The business is closed and I do not know whether anything can still be filed”	Closed business IRS penalty refund
“The business was a dissolved LLC and I do not know whether the issue belongs to me, the entity path, or payroll”	Dissolved LLC IRS penalty refund
“The business was a closed S corp and I do not know whether the penalty still belongs to the entity or to former shareholders”	Closed S corp IRS penalty refund
“The business was a closed partnership and I do not know whether the penalty still belongs to the partnership or to former partners”	Closed partnership IRS penalty refund
“The business is closed and I do not know who can sign or file”	Who can file Form 843 for a closed business?
“This is a business or closed-business file and I want the full route before I pick a narrower page”	This is a business or closed-business IRS penalty file: what should I sort first?
“I think Form 843 may apply, but I do not know whether I should get help first”	Help filing Form 843
“I keep seeing protective-claim language and do not know how that differs from a regular refund claim”	Protective claim vs regular refund claim
“I do not know whether this belongs on Form 843 or an amended return”	Form 843 vs amended return
“I got an IRS notice and do not know whether I should respond to it or file Form 843”	IRS notice response vs Form 843
“Can I probably handle this Form 843 file myself, or should I get a review first?”	DIY Form 843 vs professional help
“This is a business file and I am not sure whether it is too risky to handle on my own”	Business IRS penalty refund help
“I think I need to decide between refund, abatement, or Form 843”	refund vs abatement or Form 843 protective claim
“I already mailed Form 843 and want to know what happens next”	What happens after filing Form 843?
“I already filed Form 843 and want the full post-filing step-by-step guide, not just one narrow page”	I already filed Form 843: what happens next and what should I do now?
“I filed Form 843 months ago and still do not know what the delay means”	How long does Form 843 take?
“The IRS denied or partially denied my Form 843 claim”	IRS denied my Form 843
“I filed Form 843 but now think it needs to be supplemented or fixed”	Can you supplement or fix a Form 843 claim?
“The IRS asked for more information about my Form 843 claim”	IRS asked for more information on Form 843
“I need proof that Form 843 was mailed or filed”	Form 843 proof of mailing
“Form 843 was approved, but what exactly happened?”	Form 843 approved: what happens next?
“I filed Form 843 before the July 10, 2026 deadline. What should I do now?”	Filed Form 843 before the July 10, 2026 deadline? What to do next
“I missed the July 10, 2026 deadline. What should I check before giving up?”	Missed the July 10, 2026 IRS penalty refund deadline?

If you still are not sure where the issue fits, go back to the main assessment and let the site sort the broad situation first.

More starting points

Homepage overview Use the main homepage if you want the broadest framing before moving into a guide. S corporation penalty check Use this if the file involves an S corporation or an LLC taxed as an S corporation. Closed business penalty check Orientation page for former owners, dissolved entities, and authority issues.

Helpful references

Taxpayer Advocate Service article on July 10, 2026 and COVID-period claims IRS About Form 843