Tax1099 (Zenwork)
👤 Sanjeev K. Singh (20+ yrs in tax tech. Spent a decade as an IRS-authorized transmitter, wiring into QuickBooks and Xero before taking a dime.)🌐 siteLinkedIn
Boring IRS-approved e-file plumbing for a decade, until the IRS cut the mandatory threshold to 10 and demand exploded.
Will it work? · our read
Licensed tailwind. The mandate makes demand, the federal license fences out amateurs. But the IRS ships a free portal too, so the real moat is the integrations and 30,000-CPA channel, not filing.
01How the money moves
IRS forces e-file at 10+ returns
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Data syncs from QuickBooks/Xero
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Pays about $2.99/form to transmit
02The numbers
$163MStatedraised, first outside round
2021-11
Revenue undisclosed; the ARR range is our estimate, not a stated figure.
Private; ARR undisclosed. Raised $163M from Spectrum Equity (2021).
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See a full teardown, free → ImportYetiSourcesSources last checked 25 August 2026
Spectrum Equity: Zenwork raises $163M (Nov 2021)IRS Topic 801: who must e-file information returns (10+)IRS IRIS free 1099 e-file portal (2023)Tax1099 pricing (about $2.99/form)Spectrum Equity: Zenwork profile (customers, CPA firms)
Revenue is not disclosed first-party. The $30-60M range is our estimate, inferred from the $163M Spectrum Equity growth round (2021) plus 100,000+ customers and 30,000 CPA firms cited in the 2021 Spectrum Equity announcement, not a stated or audited figure. The IRS threshold cut (250 to 10), the free IRIS portal, and per-form pricing are documented on IRS.gov and Tax1099.com. Founding dates vary by source (Zenwork about 2002; Tax1099 product about 2010). No drama invented: the bootstrapped-a-decade-then-one-raise story is documented, and the IRIS 'dies' threat is real but not yet proven fatal. We never score you.