Durity vs Firstbase
Firstbase helps founders in the U.S. and abroad form a U.S. company and then run its books, tax and compliance. Here is what each publishes for the work a foreign-owned U.S. company needs every year.
| What you need | Durity | Firstbase |
|---|---|---|
| Bookkeeping | From $499 a month by monthly spend, with the filings below included | From $189 a month for up to $10K monthly expenses, rising by spend to $799 |
| Federal return (Form 1120) | Included | $1,799 a year, including state returns, Forms 5472, 1099s and the extension |
| Form 5472 | Included, for every foreign owner | Included in the $1,799 tax package |
| Form 5471 | $900 per foreign subsidiary | Not published |
| FBAR | Included | Not published |
| Delaware franchise tax and annual report | Included | In the Agent plan, $299 a year per state, with the registered agent |
| Formation | Not offered yet | $99 one-time plus the state fee |
| Registered agent | Not offered yet | $299 a year per state |
| Free trial or tier | 14-day free trial, no card | Not published |
| Sales call needed | No | No, self-serve |
Firstbase's figures were read on its own website on October 18, 2026; each links to the page it came from. They may have changed since. "Not published" means we did not find a price on their site, not that they lack the service.
Firstbase may suit you better if
- You still need to form the company and want formation, registered agent and a mail address in one place.
- You need sales tax registration and filing, or an R&D tax credit claim.
- Your company is a one-owner LLC owned from abroad: Firstbase publishes a separate $899 tax package for that.
Durity may suit you if
- Your U.S. company already exists and you want the books and the federal filings, Form 5472 and FBAR included, for one published monthly price.
- You live outside the U.S. and want every deadline on one calendar, with each return sent to you to approve before it is filed.
- You don't need help forming the company: Durity doesn't offer formation yet.
Common questions
Is Durity an alternative to Firstbase?
For a U.S. company that already exists, yes: Durity covers the books, the federal return, one state return, Delaware franchise tax, Form 5472 and FBAR in one monthly price. You still need to form the company and want formation, registered agent and a mail address in one place.
Where do these Firstbase prices come from?
From Firstbase's own website, read on October 18, 2026. Prices change, so check their site before you decide.
Sources
- Firstbase pricing (read October 18, 2026)
- Firstbase tax (read October 18, 2026)
- Firstbase home (read October 18, 2026)