Company lists · Data refreshed September 2026

Top 25 Grantwriting firms based in the United States

Name: Grantwriting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,405 companies tracked

RevenueBase identified 1,405 grantwriting firms headquartered in the United States as of September 2026 and tracks 6,190 professional contacts across them, including 2,538 with verified work emails. Atlanta is the largest hub.

This list covers grantwriting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

1,405Companies

6,190Contacts tracked

2,538Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest grantwriting firms based in the United States

Ranked by team size

Top 25 of 1,405 grantwriting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to grantwriting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Grantworks, INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	201-500	265 contacts →
	Indirect evidence “GrantWorks has secured and managed more than $14 billion in grant funding for 725+ local government clients.” Source: RevenueBase Database · checked Sep 19, 2026
2	Mcallister & Quinn	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	170 contacts →
	Indirect evidence “McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.” Source: RevenueBase Database · checked Sep 19, 2026
3	Hektoen Institute, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	102 contacts →
	Indirect evidence “Founded in 1943, Hektoen Institute offers a full-service, turn-key grant management solution for nonprofit organizations and municipalities.” Source: RevenueBase Database · checked Sep 19, 2026
4	Marts&lundy	Indirect evidence	Lyndhurst, NJ, United StatesHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “Marts & Lundy serves as a trusted partner to mission-driven organizations whose bold aspirations are realized through the power of philanthropy.” Source: RevenueBase Database · checked Sep 19, 2026
5	EVA Garland Consulting, LLC	Indirect evidence	Raleigh, CA, United StatesHQ checked Sep 19, 2026	51-200	75 contacts →
	Indirect evidence “Eva Garland Consulting (EGC) is a global leader in securing non-dilutive funding and providing comprehensive accounting and compliance services.” Source: RevenueBase Database · checked Sep 19, 2026
6	Lautman Maska Neill & Company	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	64 contacts →
	Indirect evidence “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Source: RevenueBase Database · checked Sep 19, 2026
7	Graham-Pelton	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	59 contacts →
	Indirect evidence “Graham-Pelton is the fundraising consulting firm chosen by leading nonprofits worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
8	Elevate Smart Grants For Powerful Social Change	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Elevate is a woman-owned and woman-led business established to help nonprofit organizations of all sizes build, sustain, and grow effective grant programs.” Source: RevenueBase Database · checked Sep 19, 2026
9	Cargill Associates	Indirect evidence	Fort Worth, United StatesHQ checked Sep 19, 2026	11-50	54 contacts →
	Indirect evidence “Cargill Associates is a full-service national fundraising consulting firm committed to tailoring carefully designed programs to meet the needs of each client.” Source: RevenueBase Database · checked Sep 19, 2026
10	Millennium Strategies	Indirect evidence	Morristown, NJ, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “Millennium Strategies is the largest full-service grants consulting firm in the region.” Source: RevenueBase Database · checked Sep 19, 2026
11	Douglas Shaw & Associates	Indirect evidence	Naperville, IL, United StatesHQ checked Sep 19, 2026	51-200	50 contacts →
	Indirect evidence “Results, it’s more than an ad campaign, it’s part of the core values which guide our work.” Source: RevenueBase Database · checked Sep 19, 2026
12	Brytebridge Nonprofit Solutions	Indirect evidence	Winter Park, FL, United StatesHQ checked Sep 19, 2026	11-50	48 contacts →
	Indirect evidence “At BryteBridge, we are on a Mission to Empower dreamers and doers to build organizations that positively impact their communities.” Source: RevenueBase Database · checked Sep 19, 2026
13	California Consulting, INC	Indirect evidence	El Segundo, CA, United StatesHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Since 2004, California Consulting, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
14	Vendorship	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 19, 2026	11-50	45 contacts →
	Indirect evidence “Vendorship provides what every business needs: solid leads.” Source: RevenueBase Database · checked Sep 19, 2026
15	Faircom NEW York	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	44 contacts →
	Indirect evidence “Faircom New York, awarded as the Best Full Service Fundraising Agency in New York in 2015 and 2016 by Wealth and Finance International, is an international fundraising and…” Source: RevenueBase Database · checked Sep 19, 2026
16	Carter, Advancing Philanthropy Worldwide	Indirect evidence	Vero Beach, FL, United StatesHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “Co-founded by Bob Carter and Steve Higgins in 2011, Carter selects its team members from the nation’s most respected nonprofit professionals.” Source: RevenueBase Database · checked Sep 19, 2026
17	Grant Engine	Indirect evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “Grant Engine has a win rate of 2x to 4x higher than the national average, the highest win rate in the space, and as a result is widely recognized as the leading platform for…” Source: RevenueBase Database · checked Sep 19, 2026
18	Grants Office, LLC	Indirect evidence	Rochester, NY, United StatesHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “We are experts in grants intelligence.” Source: RevenueBase Database · checked Sep 19, 2026
19	Government Contractinc	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “Government Contract Inc.(GCI), a subsidiary of Miits Inc, delivers end-to-end federal proposal development and recruitment solutions for government contractors across the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
20	Franklin Associates	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 19, 2026	11-50	39 contacts →
	Indirect evidence “Established in 2005, Franklin Associates is a full-service consulting firm specializing in disaster program management, strategic communications, and grant management for local…” Source: RevenueBase Database · checked Sep 19, 2026
21	Grants Plus	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 19, 2026	11-50	38 contacts →
	Indirect evidence “Founded in 2007, Grants Plus is the most trusted and experienced professional grant seeking firm in the country.” Source: RevenueBase Database · checked Sep 19, 2026
22	ZIM Consulting, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “ZIM Consulting (ZIM) is a woman-owned, Denver-based, full-service consulting firm that specializes in grant management, strategic planning, and fundraising implementation services…” Source: RevenueBase Database · checked Sep 19, 2026
23	Ignite Philanthropy	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Aspiring to maximize the power of giving, Ignite Philanthropy works with private donors and non-profit organizations to leverage their resources and ideas to achieve greater…” Source: RevenueBase Database · checked Sep 19, 2026
24	Brockport Research Institute	Indirect evidence	Brockport, NY, United StatesHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “We provide external evaluation services, grant research, proposal writing, professional learning and grant management services for school districts*, government agencies…” Source: RevenueBase Database · checked Sep 19, 2026
25	DMD Consulting	Indirect evidence	Port Washington, NY, United StatesHQ checked Sep 19, 2026	n/a	35 contacts →
	Indirect evidence “We are a non-profit fundraising consultancy focused on sustainable growth for all our partners.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: grantwriting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names grantwriting firms.
Partial evidence: Its own public description names part of grantwriting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grantwriting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,405 grantwriting firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,538 reachable decision-makers.

Free signup · no credit card

View the full list →

Grantwriting firms based in the United States at a glance

As of Sep 19, 2026

41.0%Verified-email coverage

4.4Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Atlanta

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,198

11-50

181

51-200

201-500

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,405 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among grantwriting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “grantwriting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names grantwriting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among grantwriting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 2,538 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Grantwriting firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names grantwriting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many grantwriting firms are there based in the United States?

RevenueBase identified 1,405 grantwriting firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Grantworks, INC, headquartered in Austin, tops this list with the largest team on record.

Which city has the most grantwriting firms?

Atlanta leads with 48 headquartered companies, followed by New York (45) and Washington (45).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,538 verified decision-maker contacts tracked across these 1,405 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,405 grantwriting firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Grantwriting firms by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.