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What this is By state Plan your giving Pricing API

Screen nonprofits

See essential checks and test them against your eligibility criteria

A US nonprofit and foundation intelligence database built from public IRS Form 990 and 990-PF filings. What this is. Plinth also builds funding portfolio intelligence for funders: this graph joined to live data from your current grantees.

ExploreWhat this data is By state Canada By cause Funder clusters Regranting layer Donor-advised funds Compare funders

How we knowMethodology What can be matched Data quality Known limitations What we withhold Sources Glossary

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© 2026 Plinth, a product of Time to Spare Ltd (Companies House 11530023). Built from public US IRS 990 filings. The team behind it.