Corporate filings only
Corporate tax returns.Only corporations.
Federal Forms 1120 and 1120-S plus the state corporate returns that apply to you. One team, one file, one clear status from intake to delivery.
Preparation and filing — not representation. Scope and exclusions are stated in every proposal.
Not for sole proprietors, partnerships (1065) or personal 1040 returns.
Example file
C corp · tax year 2026
- Arrival
- Quote and engagement
- Onboarding
- Information collection
- PreparationNow
- Approval
One status, computed from the file8 stages
Every fact keeps its source and check date
We only do corporate returns
No personal returns, no partnerships, no side business. Every reviewer on your file works on corporate returns every week, so questions about basis, reasonable compensation, state nexus and franchise reports are routine work rather than a learning curve.
Written scope before work
Every engagement lists what is included and, just as visibly, what is excluded.
Independent reviewer
A second person reviews the draft before you are asked to sign anything.
Evidence, not assumptions
A filing is accepted only when an acknowledgement is stored for that jurisdiction and version.
Your data stays private
Private buckets, row level security, short-lived links and audited downloads.
The process
Eight stages, and you always know which one you are in
Each stage has an owner and an explicit criterion for moving forward, so the status you see comes from the file itself rather than from a summary.
- 01
Arrival
You send a request or a guide answer comes in. We record the source and what you already have.
Owner: Operations·Advances when: Company, tax type and year captured.
- 02
Quote and engagement
A written scope with price, inclusions and exclusions. Work starts once the payment has settled — a closed browser tab is never treated as proof of payment.
Owner: Operations·Advances when: Engagement accepted and payment confirmed.
- 03
Onboarding
Portal access, the file for the tax year, the information list, and the official dates kept apart from our working dates.
Owner: Operations·Advances when: Portal active and requirements issued.
- 04
Information collection
Organizer, document upload and optional read-only accounting connection, until the team confirms the information is sufficient.
Owner: Client and preparer·Advances when: A preparer marks the information sufficient.
- 05
Preparation
Draft preparation, structured extraction proposals reviewed by a human, then an independent reviewer pass.
Owner: Preparer and reviewer·Advances when: Reviewer approves the draft version.
- 06
Approval
You receive an identified draft version and authorise e-file on that exact version (Form 8879-CORP through Drake E-Sign).
Owner: Client·Advances when: Signed authorisation matches the transmitted draft hash.
- 07
Filing
Transmission per jurisdiction, with the acknowledgement stored. A rejection opens a correction; it is never marked accepted by inference.
Owner: Operations·Advances when: Acknowledgement stored per jurisdiction.
- 08
Delivery
Filed copies, acknowledgements, payment instructions, K-1 access for shareholders and the next corporate dates.
Owner: Operations·Advances when: Copies delivered and next dates published to the portal.
What is included, and what is not
Included in a corporate engagement
- Information request list and organizer for your entity type
- Preparation of federal Form 1120 or 1120-S
- Applicable state corporate income, franchise and annual report filings quoted in your proposal
- Reviewer pass before anything is sent to you for signature
- Transmission with acknowledgement stored per jurisdiction
- Delivery of filed copies, payment instructions and next deadlines
Not included
- Representation before the IRS or a state agency
- Responses to notices that defend a position, audits, appeals or collections
- Personal returns (Form 1040) and partnership returns (Form 1065)
- Legal or tax advice on structuring, and bookkeeping cleanup beyond the quoted scope
- Guarantees of refunds, savings or processing times
The corporate year
Fifty-one jurisdictions, two federal forms, one calendar.
Corporate compliance is not one deadline. It is a set of them, per state. Here is the whole map, including what we are still confirming.
What a corporation actually faces
51 jurisdictions
Every state chart below is a count of the corporate obligations we have confirmed against an agency source. Nothing here is an average or an estimate.
- Corporate income tax
- 45of 51 · 88%
- Franchise or privilege tax
- 17of 51 · 33%
- Annual report required
- 48of 51 · 94%
The counts come from the same verified facts each state guide shows. A jurisdiction with a rule still in confirmation is counted in neither the yes nor the no.
The federal dates that shape the year
Statutory due dates for a calendar-year corporation, and what an extension does to each of them.
1120-S · S corporation
Due 15 Mar · Extended 15 Sep
JanAprJulOctDec1120 · C corporation
Due 15 Apr · Extended 15 Oct
JanAprJulOctDec
An extension moves the filing date, not the payment date.
Coverage
Every jurisdiction, one square, the facts behind it.
The colour says how many corporate obligations we have confirmed for that state: income tax, franchise tax and annual report. A hatched square still has a rule in confirmation, and the guide says so.
What working here feels like
A person with a name
Your file has a named preparer and a named reviewer. You are not writing to a mailbox; you are writing to your team.
A different reviewer
The person who reviews is not the person who prepared. That second pass happens before we ask you to sign.
One status, not five emails
You can see which stage your return is in and what is missing, computed from the file rather than from an email.
Who works on your file
Your file is handled by a preparer, an independent reviewer and an operations coordinator. The credentials behind it — PTIN, EFIN, state registrations — are on record with their evidence and expiry date. We publish a credential only when we can show it.
Individual credentials are published only once current evidence is on file.
Preparer
Builds the draft and the extraction
Reviewer
Independent pass before your signature
Coordinator
Dates, acknowledgements and delivery
Free tools, no account needed
Estimates built only from approved rules with a year and a source. No identifiers required.
S-corp election estimator
Compares an illustrative C-corp and S-corp outcome using the assumptions you enter. It does not decide whether an election is right for you.
Corporate deadline calculator
Find the federal due date for a corporate return, including weekends and holidays in the rule.
Late 1120-S penalty estimator
Estimates the federal late-filing penalty per shareholder per month, using the approved rule for the selected year.
State guides
Guides are written in English and Spanish and appear as a preparer signs them off. A state without a reviewed guide says so: we would rather show you fewer pages than a date we cannot source.
Published so far
Guides go live as a preparer signs them off. Where a state has no reviewed guide yet, its page says so instead of filling the gap.
Browse statesFrequently asked questions
Do you prepare personal returns?
No. We prepare corporate returns only: Forms 1120 and 1120-S and the state corporate filings that apply. If you need a Form 1040 we introduce a partner preparer, and you contract with them directly.
Do you represent my company before the IRS?
No. Our scope is collect, prepare, review, authorise, transmit and deliver. Representation — defending a position, audits, appeals, collections — is excluded and referred to an allied attorney with your written consent.
Can you work with an LLC?
Yes, when the LLC has elected to be taxed as a corporation, or when we file the election first. We verify the classification instead of guessing from the name.
Where do you publish your credentials?
Credentials (PTIN, EFIN, state registrations) are recorded with evidence, type and expiry, and only published once verified. Nothing on this site claims a credential that has not been verified.
How do you use artificial intelligence?
As an internal organising aid: classifying documents, proposing extractions and flagging inconsistencies. Every proposal is reviewed by a person, and the AI never decides an obligation, signs or files anything.
What happens if my state has a separate report?
The states with activity are reviewed, the rules applied are recorded with a source and a check date, and any filing not quoted in your engagement is listed as a reminder rather than silently promised.
Start with the organizer
The organizer turns what you already have into the exact list of what is missing. It does not ask for a Social Security number and it does not decide obligations: a person reviews them.
Corporations only: we do not prepare personal (1040) or partnership (1065) returns.
Get the checklist
Forms, books, payroll and assets the team needs for your entity type.
Upload what you have
The portal stores each file in a private space with an access log.
Get scope and price
If the file fits, you get a written proposal. If a price is missing from the book, it goes to review rather than being invented.
Start with the facts about your company
A short questionnaire gives you a written scope and price, or a manual review if your situation is not standard.