| Founded | 2019 |
|---|---|
| Closed | 2023 |
| Country | USA |
| Sector | Fintech |
| Total raised | $60M (Andreessen Horowitz, Notion Capital, 2019–2022) |
| Collapse type | Silent Shutdown |
| Founder | Douglas Grisaitis |
MainStreet
"The startup tax credit platform backed by a16z that automated billions in SMB claims then quietly closed"
Quiet closure with no public announcement
Key Events Timeline
MainStreet automated the discovery and filing of government tax credits and incentives for small businesses — R&D credits, hiring credits, state-level incentives — that most SMBs left unclaimed due to complexity.
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