A museum acquires an artwork only after curatorial staff recommend it, the director signs off, and — above a dollar threshold that varies by institution — a collections or trustee committee formally votes on it. At the Museum of Modern Art, any work valued above $100,000 requires presentation to the full Board of Trustees and a two-thirds majority to pass, according to the museum's 2024 collections management policy.
How does a museum actually decide to acquire a work?
Acquisition begins as a curatorial recommendation, not a purchase decision. A curator identifies a work — through a dealer, an artist's estate, an auction preview, or a donor's offer — and builds a case for it, typically addressing the object's historical importance and its relationship to works already in the collection, per MoMA's Collections Management Policy.
That case then moves up a chain of authority tied to price. Museums delegate small acquisitions to staff and reserve larger ones for committee review, a structure meant to keep routine purchases moving while forcing scrutiny on anything expensive or reputationally significant. The Museum of Fine Arts, Boston follows a similar cascade: its Director of Collections can approve acquisitions valued at $50,000 or under, the Director alone can approve up to $100,000, and anything above that goes to the museum's Collections Committee, according to the MFA's published acquisitions and provenance policy.
The mechanics differ by institution, but the pattern is consistent across major American museums: no single curator, and usually no single director, has unilateral authority to bring a significant work permanently into the collection.
Who has to approve an acquisition, and at what dollar amount?
Approval authority is tiered by value at every major museum, with the tiers set in each institution's own governing policy rather than by any outside regulator. The two thresholds below, drawn directly from each museum's published policy, show how differently the delegation lines are drawn even among comparably sized institutions.
| Approval level | Museum of Modern Art | Museum of Fine Arts, Boston |
|---|---|---|
| Staff-level approval | Chief Curator, up to $10,000 ($25,000 for Painting and Sculpture), with Director sign-off | Director of Collections, up to $50,000 |
| Director-level approval | Up to $20,000 ($50,000 for Painting and Sculpture), with Director and Committee Chair sign-off | Up to $100,000 |
| Committee/board approval required | Relevant Trustee Committee for all standard acquisitions; full Board plus two-thirds vote above $100,000 | Collections Committee, for anything above $100,000 |
Works approved through an expedited, staff-level track at MoMA still have to be reported to the relevant Trustee Committee at its next meeting — there is no acquisition path that entirely bypasses institutional review, only ones that defer it.
What is the difference between a purchase, a gift, and a bequest?
A purchase is a work a museum buys with acquisition funds, a gift is a work an owner donates during their lifetime, and a bequest is a work left to the museum in a donor's will; MoMA's policy lists purchase, gift, fractional-interest gift, bequest, and exchange as its five recognized acquisition methods.
Fractional-interest gifts let a donor transfer partial ownership over time — useful for tax planning — while an exchange trades one or more works already in the collection for a work the museum wants instead. Whatever the method, the same curatorial recommendation and director/committee approval chain applies; a gift does not skip review simply because no money changes hands. The MFA Boston's policy adds a specific exception for timing: gifts valued above $100,000 offered between the museum's final committee meeting of the year and December 31 can be accepted provisionally, with formal reporting to follow — a mechanism aimed at donors making year-end tax-motivated gifts.
What provenance research happens before a work enters a collection?
Provenance research means tracing a work's ownership history back as far as records allow, and museums treat it as a precondition of acquisition, not a formality completed afterward. The MFA Boston requires staff to seek "all available information and accurate written documentation about the ownership history" of a proposed acquisition, including import and export records, before it goes to committee.
Two categories get heightened scrutiny. For art with a documented history in continental Europe between 1933 and 1945, the museum checks available Nazi-era loss databases and declines any purchase showing evidence of illegal appropriation that has not been resolved through restitution. For archaeological and ancient art, the MFA generally will not acquire an object unless research confirms it left its country of origin before November 17, 1970 — the date of the UNESCO Convention on cultural property — or was legally exported afterward. The museum states outright that it will not acquire any work "known to have been stolen or illegally appropriated."
These are institution-specific policies, not law, but they track standards that have become close to universal among AAMD-member museums since the early 2000s.
What is deaccessioning, and why does it draw so much scrutiny?
Deaccessioning is the formal removal and sale of a work from a museum's permanent collection, and it is governed by rules meant to prevent institutions from treating their collections as a balance-sheet asset. At MoMA, deaccessioning requires a majority vote of curators in the relevant department, approval from the Chief Curator and Director, and Trustee Committee sign-off; works above $100,000 need a two-thirds vote of the full board, the same threshold that applies to acquiring one.
The rule that draws the most outside attention governs where the sale proceeds can go. The Association of Art Museum Directors — the trade body most U.S. art museum directors belong to — restricts deaccessioning proceeds to buying other art or "direct care" of the existing collection, and MoMA's own policy uses that same standard. Trustees and staff are explicitly barred from acquiring a work their own museum has deaccessioned, directly or through an intermediary.
That "direct care" language has itself been the subject of a fight within the field, detailed below.
How has the AAMD's "direct care" rule changed, and why?
The Association of Art Museum Directors narrowed its definition of "direct care" in September 2022, after a two-year pandemic-era loosening let museums use deaccessioning proceeds for operating costs, including staff salaries. Membership voted 109 in favor, out of 130 votes cast among 199 eligible members, to restrict future proceeds to "conservation and restoration treatments" and "materials required for storage," explicitly excluding salaries and exhibition costs, according to AAMD's own announcement of the rule change and reporting by ARTnews.
The reversal followed public backlash to pandemic-era sales at several institutions, among them a widely reported Baltimore Museum of Art plan to sell major paintings, which the museum ultimately shelved. An 18-director task force led by Rod Bigelow of Crystal Bridges Museum of American Art spent roughly nine months drafting the replacement rule before it went to a membership vote. AAMD says the tightened definition also brings its standard closer to how the American Alliance of Museums and the Financial Accounting Standards Board treat the same funds, though AAMD's definition goes further by naming specific eligible uses that neither of those bodies has spelled out.
The practical effect for museums today: a work sold from the collection can help pay to conserve and store the art that remains, but it cannot legally help cover a curator's salary or the cost of mounting next season's exhibition — a distinction that now sits at the center of every deaccessioning debate in the field.
Frequently asked questions
- Can a museum director buy a painting for the collection without anyone else's approval? Rarely, and only below a set dollar threshold. At MoMA that ceiling is $20,000 for most departments ($50,000 for Painting and Sculpture) with a committee chair's sign-off; above it, a trustee committee vote is required.
- Does a donated artwork skip the approval process a purchase would need? No. MoMA's policy applies the same curatorial-recommendation and director/committee-approval chain to gifts, bequests, and exchanges as it does to purchases, regardless of whether money changes hands.
- Can a museum spend deaccessioning proceeds on staff salaries? Not under current AAMD standards. Since the association's September 2022 rule change, proceeds from a sold work may fund only conservation, restoration, and storage costs for the remaining collection — not salaries or exhibition expenses.
- What happens if a museum discovers a work in its collection was stolen or looted? Institutional policies like the MFA Boston's commit the museum to declining or unwinding any acquisition shown to have been illegally appropriated, including consulting Nazi-era loss databases for European works with a 1933–1945 ownership gap.
For a related guides perspective, read How the Buyer's Premium Works at Art Auctions, and Why It Keeps Climbing.