Before you change your business structure, know exactly what it costs, how long it takes, and which tax traps to watch for. In our opinion, the surprises are almost always on the tax side, not the filing side.
Free Calculator
What conversion are you planning?
No email required. All calculations run in your browser. Costs shown are government fees; our service fee is quoted separately in the results.
Honest note from us: Some conversions are cheap paperwork. A Sole Prop to LLC conversion in Wyoming is roughly $100 in government fees and a few weeks of processing. Others — particularly C-Corp to S-Corp within 5 years of an earlier conversion — carry a Built-In Gains tax exposure that can dwarf any savings. In those cases, we believe the right move is a CPA review before any filing happens. We will connect you with one, not charge you more to skip that step.
We Handle the Entire Conversion
Full conversion handled for you — $299
Includes all state filings, IRS forms, updated operating agreement, and ongoing registered agent service.
How we built this: State filing fees are drawn from each state's Secretary of State website as of early 2026. IRS form requirements (Form 2553, Form 8832, EIN applications) are based on current IRS guidance. Conversion fees for corporate dissolution and formation are estimates for the most common statutory paths; your state may vary. Items marked with * are best-effort estimates that should be confirmed with your state before filing.
This is not legal or tax advice. Entity conversion decisions carry legal and tax consequences specific to your situation. This tool provides general information only. We strongly recommend consulting a licensed CPA and business attorney before executing any conversion, particularly those involving C-Corporations, Built-In Gains exposure, or multi-state operations.
Competitor and entity characterizations are our opinion and reflect general publicly available information. Individual outcomes vary.
We value your privacy because we value ours.
This calculator runs entirely in your browser. We collect nothing. When you hire us for a conversion, we file as the organizer where the state allows, use our address on public records, and never sell your information to anyone.