Boston Foundation Grants: A 2026 Guide for Nonprofits

Boston’s foundation map is small and dense. Five funders shape much of the local private giving picture, and they signal their priorities clearly enough that misalignment is mostly self-inflicted. The Boston Foundation runs the community-foundation function with deep roots and accessible cycles. Barr is the strategic private foundation. Klarman Family is family-foundation philanthropy at substantial scale with a strong Boston emphasis. Liberty Mutual channels corporate giving into Boston-area communities. Cummings is structurally unusual and operates one of the largest multi-year competitive cycles in the region.

Most Boston nonprofits engage TBF and one or two of the others as a one-off application stream. The right approach is the opposite: treat each as a multi-year cultivation and engage all three grant channels — competitive cycles, DAFs, and field-of-interest funds — across the portfolio.

The Local Funding Landscape

Massachusetts has roughly 50,000 active nonprofit organizations on the IRS Business Master File. Greater Boston concentrates a substantial share. The metro’s foundation infrastructure is anchored by The Boston Foundation, with Barr operating at strategic scale, Klarman Family contributing major family-foundation capacity, Liberty Mutual channeling corporate philanthropy, and Cummings running its distinctive long-cycle program.

Three things shape Boston’s foundation landscape:

• TBF as anchor. The Boston Foundation is the natural first stop for most Greater Boston nonprofits, both for competitive grants and for DAF discoverability.
• Strategic private foundations with clear scope. Barr and Klarman Family both publish program priorities clearly; off-strategy proposals don’t advance.
• A high-volume signature cycle at Cummings. The $30 Million Program is one of the more accessible large multi-year grant cycles in the country for Massachusetts nonprofits — but it’s competitive and the application bar is meaningful.

For broader frame, see the community foundation grants guide and private foundation grants guide.

The Boston Foundation

TBF is the community foundation for Greater Boston, founded in 1915 and one of the country’s older community foundations. It has assets of approximately $1.7 billion and grants substantial dollars annually across competitive cycles, DAFs, and field-of-interest funds.

Focus areas. TBF organizes grantmaking around opportunity, equity, and civic infrastructure in Greater Boston. Specific cycles support arts and culture, education, health, housing, immigrant and refugee work, and economic mobility. TBF publishes a strategic agenda — Understanding Boston, the Boston Indicators project — that informs grantmaking priorities.

Typical grant size. Responsive competitive grants generally fall between $25,000 and $250,000. Multi-year general operating support is increasingly available for established grantees. DAF and field-of-interest grants vary widely with donor intent.

Application path. Most TBF cycles use a streamlined online application; specific programs vary. Field-of-interest funds operate through program-officer guidance — ask explicitly during cultivation.

Distinctive feature. Civic infrastructure orientation. TBF has long invested in civic infrastructure for Greater Boston — research, convening, indicators — alongside direct grantmaking. Engaging the foundation’s research and indicators work is part of being known to its program team.

What gets funded. Greater Boston nonprofits aligned with current cycle themes. TBF has emphasized organizations led by and serving communities of color and historically underfunded geographies in the metro.

Citation: The Boston Foundation grants overview at tbf.org.

Barr Foundation

The Barr Foundation is a Boston-based private foundation with a defined strategic focus on Massachusetts and parts of New England. It funds arts and culture, climate, and education with a strong policy and systems orientation.

Focus areas. Arts and culture (with a focus on Massachusetts cultural infrastructure), climate (transportation, buildings, and clean energy in the Northeast), and education (effective high schools and pathways to opportunity in Massachusetts).

Typical grant size. Mid-six-figure grants are common for institutional grantees. Multi-year support is standard for portfolio organizations. Larger initiative-specific awards exist.

Application path. Largely program-officer-shaped. Some Barr programs accept LOIs through their public-facing portals; others operate by program-officer-led identification of grantees. Read each program area’s intake instructions carefully.

Distinctive feature. Strategy clarity at private-foundation scale. Barr publishes program strategies in detail, similar to the strategic-philanthropy model used at Hewlett and Packard. A nonprofit can read the strategy document for the relevant program area and assess fit before approaching the foundation.

What gets funded. Organizations doing leading work within Barr’s published strategy areas in Massachusetts and the region, with strong evaluation infrastructure and field leadership.

Citation: Barr Foundation programs and strategies at barrfoundation.org.

Klarman Family Foundation

The Klarman Family Foundation is a family foundation operating at substantial scale, with a national and international scope and a strong Boston emphasis. It funds across global health, biomedical research, Jewish causes, and education.

Focus areas. Global health, biomedical research, Jewish causes (including Israel-related work), and education. The foundation’s grantmaking is concentrated and program-officer-shaped.

Typical grant size. Wide range by program area. Major institutional grants can be substantial, particularly in biomedical research and global health.

Application path. Largely closed to open applications. Klarman Family’s grantmaking is identified through program-officer engagement and existing partner networks.

Distinctive feature. Family-foundation philanthropy at scale. Many Klarman Family grants reflect the family’s specific philanthropic interests; the funder is selective and thematic.

What gets funded. Organizations operating within the foundation’s defined program priorities, often with established institutional partnerships.

Citation: Klarman Family Foundation programs at klarmanfoundation.org.

Liberty Mutual Foundation

Liberty Mutual Foundation is the philanthropic arm of Liberty Mutual Insurance, headquartered in Boston. It channels corporate giving into Boston-area communities (and selected other geographies where the company operates).

Focus areas. Homelessness, hunger, and educational opportunity in Boston-area communities. The foundation has long-tenured partnerships with several major Boston nonprofits working in these areas.

Typical grant size. Most grants fall in the mid-five-figure to mid-six-figure range. Corporate-foundation grant cycles vary by program area.

Application path. Through the Liberty Mutual community involvement portal. Specific programs publish eligibility and submission processes.

Distinctive feature. Corporate alignment. Liberty Mutual Foundation’s grantmaking aligns with the company’s broader community involvement strategy. Programs that connect to employee engagement (volunteer matching, skills-based volunteering) are often more competitive.

What gets funded. Boston-area nonprofits working in the foundation’s priority areas with strong governance and demonstrated impact.

Citation: Liberty Mutual community involvement at libertymutualgroup.com.

Cummings Foundation

Cummings Foundation has an unusual structure. It is funded primarily by Cummings Properties’ commercial real estate operations, with substantial net rents flowing to the foundation. The foundation’s grantmaking is heavily concentrated on Massachusetts nonprofits.

Focus areas. Across human services, education, health, and community programs in Massachusetts. The foundation funds broadly across cause areas rather than concentrating on a single issue.

Typical grant size. The signature $30 Million Program awards grants from $100,000 to $500,000+ paid over 10 years. Other Cummings programs vary in size.

Application path. The $30 Million Program uses a multi-stage competitive process with letters of inquiry and finalist invitations. The cycle is high-volume and rigorous; eligibility and the application process are detailed on the foundation’s site.

Distinctive feature. The 10-year payout structure of the $30 Million Program. Multi-year unrestricted-feeling support of this duration is rare in private philanthropy. The competition is real, but the prize is meaningful.

What gets funded. Massachusetts nonprofits with strong governance, clear community impact, and demonstrated capacity to manage multi-year support.

Citation: Cummings Foundation grants overview at cummingsfoundation.org.

The Three Grant Channels in Boston

Boston foundation dollars flow through three channels.

Competitive cycles. TBF, Cummings, Barr (in some programs), and Liberty Mutual all run competitive cycles. This is the visible channel and where most fundraising attention concentrates.

Donor-advised fund grants. Concentrated at TBF. Hundreds of DAF holders make grants without an application — discoverability through TBF’s grantee directory and Candid is the lever. Most Boston nonprofits underweight this channel.

Field-of-interest and program-officer-directed grants. Embedded across TBF, Barr, and Klarman Family. The way to surface these is to ask program officers directly during cultivation conversations.

A serious development plan engages all three.

Application Strategy Tailored to Boston

Each Boston funder rewards a different approach.

For TBF: lead with Greater Boston roots and equity context. TBF explicitly funds organizations led by and serving historically underfunded communities in the metro. Make that authentic in the proposal.

For Barr: read the program strategy document before any approach. Barr rewards proposals that explicitly engage with the foundation’s outcome goals. Don’t pitch off-strategy. Off-state proposals (outside Massachusetts and parts of New England) generally don’t advance.

For Klarman Family: don’t apply cold. The foundation’s grantmaking is program-officer-shaped, and cold applications largely don’t advance. Cultivation is the path.

For Liberty Mutual: align tightly to the priority areas (homelessness, hunger, educational opportunity) and consider whether your work connects to employee-engagement opportunities.

For Cummings: take the $30 Million Program seriously. The application bar is meaningful. Strong governance documentation, clear program theory of change, and demonstrated impact in Massachusetts are baseline expectations.

For proposal mechanics across all five, see the grant proposal writing guide.

Common Mistakes Specific to Boston

A few patterns recur in Boston fundraising.

Treating TBF as a single channel. TBF is at least three channels — competitive cycles, DAFs, and field-of-interest funds. Engaging only the competitive cycle misses most of the dollar volume.

Pitching Barr off-strategy. Barr publishes detailed strategies for arts and culture, climate, and education. Generic excellence pitches that ignore the strategy don’t advance.

Treating Cummings’s $30 Million Program as a sure thing. The cycle is competitive. A weak application doesn’t advance regardless of organizational strength elsewhere.

Ignoring TBF’s DAF channel. TBF holds a substantial DAF book. A nonprofit not visible in TBF’s grantee directory and on Candid is invisible to those donors.

Underestimating Massachusetts state compliance. Massachusetts requires Form PC annual filings with the Attorney General’s Non-Profit Organizations/Public Charities Division. Boston funders verify state filings during diligence. The grant compliance checklist covers the baseline.

Submitting Klarman Family proposals cold. The foundation’s intake is heavily program-officer-shaped. Cold submissions almost universally don’t advance.

For a wider view of Massachusetts foundation funding, see the best software for community foundations.

Compliance and Reporting Expectations

Boston foundations expect mid-tier reporting rigor.

• Narrative report at end of grant period. Outcome-focused, with reflection on what changed mid-grant. TBF, Barr, and Cummings all expect reflection that connects to the original proposal.
• Financial expenditure report. Aligned to the original budget. Material variance over published thresholds requires explanation.
• Mid-grant updates. TBF, Barr, and Liberty Mutual program officers expect informal mid-grant communication. Cummings $30 Million Program grantees follow a structured reporting calendar across the 10-year payout.
• Independent audit annually. Every funder listed expects a recent audit.
• Massachusetts state compliance. Massachusetts requires Form PC annual filings with the Attorney General’s Public Charities Division. Missing filings are a red flag. See the Massachusetts state nonprofit profile for filing context.

Equity, demographic, and impact reporting is increasingly common in Boston funder questions.

Where to Start

Three actions for a Boston development director with a real plan to build:

1. Map your work to the right primary funder. Greater Boston community work — start with TBF. Strategic Massachusetts arts, climate, or education — Barr. Massachusetts nonprofit with strong governance and a multi-year case — pursue the Cummings $30 Million Program when eligible. Boston-area homelessness, hunger, or educational opportunity — Liberty Mutual.

2. Audit your TBF discoverability. Verify your TBF grantee directory entry, your Candid profile, your program descriptions, and your financial documentation. The DAF channel is the highest-leverage channel most Boston nonprofits underuse.

3. Schedule program-officer cultivation. At TBF, Barr, and (when appropriate) Liberty Mutual, request a 20-minute conversation. Ask explicitly about field-of-interest funds and current program priorities. In Boston, cultivation pays off across multiple cycles.

For a deeper view of how to find grant opportunities beyond these five funders, see how to find grants for nonprofits. For Massachusetts state-level compliance scaffolding, the grant compliance checklist maps the filing load that Boston funders will expect to be in order.

Boston’s foundation system rewards alignment, patience, and DAF-channel discipline. Treat each of the five major funders as a multi-year relationship, engage all three grant channels, and the annual private support number compounds in a way that one-off applications can’t replicate.

DEFINITION

Community foundation

A public charity that pools donations from many donors and grants in a defined geographic region. Files Form 990, hosts donor-advised funds, and accepts gifts from the broad public.

DEFINITION

Private foundation

A 501(c)(3) charitable organization typically funded by a single donor, family, or company. Files Form 990-PF, must distribute approximately 5% of assets annually, and may have stricter self-dealing rules than a public charity.

DEFINITION

$30 Million Program

Cummings Foundation's signature competitive grant cycle for Massachusetts nonprofits. Awards are paid over 10 years, with sizes ranging from $100,000 to $500,000+ per grant.

DEFINITION

Field-of-interest fund

A named fund at a community foundation restricted to a specific cause area within the foundation's region. The foundation administers grant decisions, sometimes in consultation with the donor's family or successors.