Fosti
APIyesFREEnoDOCS4/5
FO6.5#73of 109
outWeb
Ranked in Tax Compliance Software·paid from $399/mo
About
Fosti is ranked #73 of 109 in tax compliance software on Inferse. It runs on API, Web. There is no free plan. Paid plans start at $399/mo.
Compared on tax compliance software
- Free plan
- Nogetfosti.com
- Paid from
- $399/mogetfosti.com
- Supported tax types
- sales taxgetfosti.com
- Return filing
- Nogetfosti.com
- Filing support level
- assistedgetfosti.com
- API access
- Yesgetfosti.com
Facts
- Purpose
- Fosti is an operating system for sales tax practices, designed for multi-client, multi-state compliance at CPA firms.getfosti.com · 10 Oct 2026
- Workflow
- Its compliance workflow uses a five-step cycle that opens automatically for each active client, with sequential steps and logged actions.getfosti.com · 10 Oct 2026
- Client portal
- The white-label client portal lets clients upload data, approve liabilities, and track filing status, and is included in all tiers.getfosti.com · 10 Oct 2026
- Worksheets
- Fosti says its worksheets auto-populate from client data and flag material variances for senior review.getfosti.com · 10 Oct 2026
- Modules
- The product lists 11 modules, including CRM and nexus profiles, filing calendar, escrow ledger, document management, time and billing, and exemption certificates.getfosti.com · 10 Oct 2026
- Integrations
- The site lists Vertex, Avalara, OneSource, Sovos, TaxJar, NetSuite, QuickBooks, and Xero; it says import files are generated for Vertex, Avalara, and OneSource.getfosti.com · 10 Oct 2026
- Returns engine
- The site says Fosti’s native returns engine is planned for Q4 2026, with PDF generation for the top 15 states.getfosti.com · 10 Oct 2026
- Security
- Fosti states it is SOC 2 Type II audited and uses AES-256 encryption at rest, TLS 1.3 in transit, and per-tenant isolation.getfosti.com · 10 Oct 2026
- Data residency
- The site says all data is stored in U.S. regions and backups are daily.getfosti.com · 10 Oct 2026
- Support and onboarding
- Starter includes email support, Growth includes priority support, and Scale includes dedicated onboarding; self-serve onboarding is stated to take under an hour.getfosti.com · 10 Oct 2026
- Limits
- All tiers include unlimited states and the white-label portal, and the site says there are no per-return fees.getfosti.com · 10 Oct 2026
- Upgrade notice
- Fosti says it notifies customers when they reach 90% of their client limit, and upgrades are one click, prorated, and effective immediately.getfosti.com · 10 Oct 2026
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Where it ranks on Inferse
- Best Tax Compliance Software in 2026#73 of 109
Sources
- getfosti.com· checked 10 Oct 2026