TLDR
Grant research databases are only as useful as the time your team has to act on what they find. The free tools (Grants.gov, USASpending.gov, ProPublica) cover federal opportunities and foundation research adequately for many organizations. Paid subscriptions to Candid or GrantStation are worth the cost if you can dedicate staff time to systematic prospecting. Discovery is the easy part - the actual work is applying and managing the grants you win.
Candid Foundation Directory
The most comprehensive private foundation grant database, with profiles on over 250,000 US foundations and 10 million grants.
Pros
- ✓ Most comprehensive US private foundation database - 250,000+ foundation profiles
- ✓ Grant history data shows what funders have previously supported
- ✓ Application guidelines, program officer contacts, and grant cycles
Cons
- × Annual subscription cost significant for small nonprofits
- × Data is only as current as foundation 990 filing cycles - some information lags by 12-18 months
- × Coverage strongest for US private foundations; weaker for government and international
Pricing: $200-$2,000+/year depending on tier and organization size
Verdict: Best for nonprofits systematically prospecting private foundations who can dedicate staff time to regular database research.
GrantStation
Grant research database covering foundations, government, and corporate giving opportunities with deadline tracking.
Pros
- ✓ Covers foundation, government, and corporate grant opportunities in one database
- ✓ Deadline calendar helps with prospecting workflow
- ✓ Lower price point than Candid for basic foundation research
Cons
- × Less comprehensive foundation coverage than Candid
- × Database quality and currency varies by funder category
Pricing: ~$599-$899/year
Verdict: Best for organizations wanting a single lower-cost subscription covering both foundation and government grant opportunities.
Instrumentl
Grant discovery and tracking platform that combines database search with grant pipeline management and deadline tracking.
Pros
- ✓ Combines grant discovery and pipeline tracking in one tool
- ✓ Strong matching algorithm surfaces relevant opportunities
- ✓ Deadline and status tracking for active applications
Cons
- × Monthly pricing adds up - expensive compared to annual database subscriptions for research-only use
- × Best value when actively managing a grant pipeline, not just prospecting
Pricing: $179-$479/month depending on plan
Verdict: Best for organizations that want grant research and pipeline management in a single platform and are actively submitting applications.
Grants.gov
Federal government's official database of all federal grant opportunities - free and authoritative for federal funding research.
Pros
- ✓ Authoritative source for all federal grant opportunities
- ✓ Email notifications for new opportunities matching your criteria
- ✓ Required for federal grant applications - not optional
Cons
- × Interface is functional but not user-friendly - searching requires patience
- × Federal grants have high compliance overhead - not appropriate for all nonprofits
Pricing: Free
Verdict: Required for any nonprofit pursuing federal funding - use it alongside a private foundation database, not instead of one.
USASpending.gov
Federal spending transparency database useful for researching which organizations receive federal grants in your program area.
Pros
- ✓ Shows actual federal grant recipients by agency, program, and location
- ✓ Useful for identifying peer organizations who receive funding you are pursuing
- ✓ Helps gauge realistic award sizes and competition
Cons
- × Research tool only - does not list open opportunities, only past awards
- × Data can lag by several months
Pricing: Free
Verdict: Best for competitive intelligence - understanding who receives funding from agencies and programs you are targeting.
ProPublica Nonprofit Explorer
Free nonprofit 990 database for researching private foundation giving history and peer organization financial information.
Pros
- ✓ Free access to nonprofit 990 filings including foundation grants paid
- ✓ Useful for researching foundation giving patterns before approaching a funder
- ✓ No subscription required
Cons
- × Less organized than Candid for systematic foundation prospecting
- × 990 data typically 12-24 months behind current giving
Pricing: Free
Verdict: Best as a free supplement to paid databases - particularly for researching specific foundation giving history before an approach.
Finding grants is not the same problem as managing them. Many nonprofits have more grant opportunities than they can pursue and staff up accordingly. Others genuinely lack awareness of funders in their cause area. The right database depends on your org’s position.
This guide covers the major grant research databases - both free and paid - with honest assessments of coverage, cost, and who each one is built for. It also covers the federal-specific tools that every nonprofit pursuing government funding needs to know.
Paid Grant Research Databases
1. Candid Foundation Directory (formerly Foundation Center)
Candid is the definitive source for private foundation grant data in the United States. The Foundation Directory - now hosted on Candid’s platform - is built from IRS Form 990-PF filings, which all private foundations are required to file and which report every grant they made.
What the data covers
- 235,000+ US foundations and corporate giving programs
- Grants database with 10+ million grant records
- Funder guidelines, focus areas, geographic restrictions, and contact information
- Prospect lists: search foundations by what they have funded recently
- Deadline tracking and alerts
- RFP (Request for Proposals) notifications from foundations that accept applications
- Research reports on giving trends by cause area and geography
The Candid data is the most complete available for private foundations because it is sourced directly from required tax filings. It is not perfectly current - 990-PF filings can lag by 12-18 months - but it represents a comprehensive historical record of who gives to what.
Who it’s for
Any organization with a meaningful private foundation strategy. Candid is the standard tool development directors use for systematic foundation prospecting. It is also useful for researching a specific funder before approaching them - what they have funded recently, at what dollar levels, and whether organizations like yours have received grants.
Pricing
Candid pricing is based on organization size. Nonprofit subscriptions start at approximately $165-$800/year depending on budget. Full access features are on higher tiers. Check Candid’s website for current pricing, which includes discounts for smaller organizations.
What it does not do
Candid covers private foundations and corporate giving programs. It does not cover federal grants (use Grants.gov for that) or state-level government grants (check your state’s portal separately). The database is backward-looking - it shows what funders have given, not real-time RFPs with current deadlines.
2. GrantStation
GrantStation is a subscription database covering a broad range of grant opportunities: private foundations, corporate funders, federal grants, and state and local government programs. It positions itself as a single-source alternative to using multiple specialized tools.
What the data covers
- 6,000+ private and community foundation profiles
- Federal grant opportunities (pulls from Grants.gov with added context)
- State government funding opportunities
- International grant programs for US-based organizations
- Weekly listings of newly added funders and RFPs
- Resource library for grant writing
GrantStation’s breadth is its main advantage - you can search across funding types in one place rather than checking separate federal and foundation databases.
Who it’s for
Development directors who want one subscription covering multiple funding types, and organizations in cause areas where private foundation funding is less abundant and federal or state grants are important revenue sources.
Pricing
GrantStation charges membership fees based on organization size. Annual memberships range from approximately $699-$1,200/year for nonprofits. Check GrantStation’s website for current rates.
What it does not do
GrantStation’s private foundation coverage is not as deep as Candid’s. For organizations focused primarily on private foundations, Candid remains the stronger specialized tool. The federal grant information is also available for free through Grants.gov.
3. Instrumentl
Instrumentl is the most technology-forward grant research platform in this category. It combines a searchable grant database with workflow tools for tracking applications and deadlines, which most grant databases do not include.
What the data covers
- 450,000+ active grant opportunities
- Private foundations, corporate funders, federal and state government grants
- AI-powered matching that scores funders against your organization’s profile
- Deadline tracking and calendar integration
- Award tracking (for monitoring whether you won a grant and what you reported)
- Team collaboration features for development teams
Who it’s for
Organizations with active grant programs - multiple applications in progress simultaneously - that want grant research and pipeline management in the same tool. Instrumentl is particularly useful for organizations where multiple people (development director, grant writer, program staff) need visibility into the grant calendar.
That said, Instrumentl’s grant pipeline tools overlap with what a dedicated grant management platform like GrantPipe offers. If your organization manages post-award compliance, restricted fund tracking, and funder reporting in GrantPipe, you may not need Instrumentl’s workflow features - just its discovery database. See grant pipeline management and grant management best practices for more on how these pieces fit together.
Pricing
Instrumentl starts at $179/month (billed annually) for the basic Discover tier. Higher tiers with award tracking start at $299/month. Pricing is at the higher end for this category.
What it does not do
Instrumentl is a discovery and pre-award workflow tool. It does not handle restricted fund accounting, post-award compliance, single audit preparation, or the financial reporting that federal grants require. For organizations with federal funding, Instrumentl identifies opportunities but does not replace a compliance-focused grant management system.
Free Grant Research Tools
4. Grants.gov
Grants.gov is the official federal grants portal operated by the US Department of Health and Human Services on behalf of all federal grant-making agencies. Every federal grant opportunity open to nonprofits is required to be posted here.
What the data covers
- All open federal grant opportunities from every federal agency
- Closed and archived opportunities (useful for understanding what was funded in prior cycles)
- Agency-specific filters and keyword search
- Email alerts for new opportunities matching your search criteria
- NOFA (Notice of Funding Availability) documents, application packages, and instructions
Who it’s for
Any nonprofit pursuing federal funding. Grants.gov is not optional if federal grants are part of your strategy - it is the authoritative source.
Pricing
Free. No subscription required.
What it does not do
Grants.gov does not include state, local, or private foundation grants. The interface is functional but not intuitive - finding relevant opportunities requires specific keyword knowledge. It also does not include tools for managing applications, tracking deadlines, or post-award compliance. For compliance management once you win a federal grant, see restricted fund tracking and the federal grant management software guide.
5. USASpending.gov
USASpending.gov is the federal database of all government spending, including grants. It is most useful for research rather than prospecting - it shows what has been funded, not what is currently available.
What the data covers
- All federal grant awards by agency, recipient, program, and geography
- CFDA (Catalog of Federal Domestic Assistance) numbers for every program
- Detailed award records including obligation amounts, performance periods, and sub-awards
- Historical data going back to 2008
How nonprofits use it
- Research what organizations in your cause area and geography have received federal funding, and from which agencies
- Identify federal programs that fund work similar to yours before it appears in Grants.gov
- Understand the scale of funding available in a specific program
- Verify that a funder has actually made grants in your area before investing time in an application
Who it’s for
Organizations doing research on federal funding strategy, not searching for open RFPs. USASpending is most useful as a complement to Grants.gov, not a replacement.
Pricing
Free.
What it does not do
USASpending does not list open grant opportunities. Everything in the database is already awarded. For real-time opportunity listings, use Grants.gov.
6. ProPublica Nonprofit Explorer and IRS Tools
ProPublica Nonprofit Explorer (projects.propublica.org/nonprofits) is built from IRS 990 data and provides searchable access to nonprofit tax filings - including Form 990-PF for private foundations.
For grant research purposes, this is most useful for:
- Looking up a specific foundation’s 990-PF to see which organizations they funded and at what amounts
- Researching whether a foundation has funded organizations like yours before
- Understanding a foundation’s financial health and payout rates
- Verifying a foundation’s contact information and program officer names
IRS Tax Exempt Organization Search (apps.irs.gov/app/eos) provides status verification and links to available 990 filings. Less feature-rich than ProPublica for research purposes, but the authoritative source for verification.
Who it’s for
Any nonprofit that needs foundation research tools and cannot afford a Candid subscription. The data is less curated than Candid but available immediately and at no cost. Also useful for specific foundation research even if you have a Candid subscription.
Pricing
Free.
Additional Federal-Specific Resources
SAM.gov (System for Award Management) - federal contractor and grant recipient registration. Registration in SAM.gov is required before receiving any federal grant. It is also searchable for active federal opportunities and is where federal agencies post some contract and grant opportunities not on Grants.gov.
State Grant Portals - every state has its own grant portal for state-funded programs. Coverage varies significantly. Examples: California Grants Portal (grants.ca.gov), New York State Contract Reporter, Texas Grants Opportunities. Search for your state’s portal directly.
USDA Grants.gov equivalent programs - USDA has some funding programs with their own portals and application processes (REAP, RBEG, Community Facilities) in addition to Grants.gov listings. Check USDA’s Rural Development portal if you serve rural communities.
How to Use Multiple Databases Efficiently
Most organizations use a combination:
- Candid for private foundation prospecting (the most productive revenue source for most mid-sized nonprofits)
- Grants.gov for federal opportunities (free and required if you pursue federal funding)
- USASpending + ProPublica for research on specific funders before approaching them
- GrantStation or Instrumentl if you want a single database and are willing to pay for convenience
Once you identify and win grants, the research database becomes irrelevant. What matters then is post-award compliance: tracking restricted fund expenditures, preparing funder reports, and maintaining an audit trail. See funder reporting templates and audit trail and activity log for how GrantPipe handles this work.
The grant software ROI calculator helps you assess the full cost picture of your grant management tools.
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