Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
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for the Art Market and Heritage
24 October 2026 · Updated at 07:47 GMT FR EN ES Member area Log in
Member States

State contributions

The scale in five bands, from €12,000 to €2.4 million per year, and its payment arrangements.

Updated : October 28, 2026· 3 min read

A proportionate scale

The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)
The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)

Each Member State pays an annual contribution. It depends on its national wealth and the size of its art market, so that the effort required remains proportionate to its capacities.

This scale is indicative. For the annual detail, see the section Financial contributions. Admission conditions come before any payment.

  • Contributions
  • Scale
  • Budget

State contributions in figures

5Bands
€12,000Annual minimum (indicative)
€2.4MAnnual maximum (indicative)
31 MarchPayment deadline

Source: Member States Relations Directorate.

Distribution

Band 1Minimum contribution
Bands 2 and 3Intermediate contributions
Bands 4 and 5Largest market centres

Indicative distribution of States by band.

The principle of the scale

The scale rests on two criteria: the State's gross domestic product and the size of its art market. Each State is assigned to one of five bands, which the General Assembly revises periodically.

This system prevents a small State from being penalised and ensures that the major market centres contribute appropriately to the common resources.

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Headdress Mask: Buffalo (c. 1910)
Headdress Mask: Buffalo (c. 1910)
Arrival of the "Southern Barbarians" (c. 1600)
Arrival of the "Southern Barbarians" (c. 1600)

Minimum and maximum amounts

The minimum contribution is €12,000 per year (indicative). The maximum contribution reaches €2.4 million per year (indicative). In between, three intermediate bands correspond to progressive steps.

Amounts are denominated in euros and indexed to inflation every three years, according to a rule set by the Assembly.

Payment

The contribution is due before 31 March each year. Payment is made by bank transfer or direct debit, at the State's choice. A notice of payment due is sent in January to the national focal point and the ministry of finance.

States admitted during the year pay a pro rata contribution for the time remaining.

Transparency and audit

A financial report is published every year and the accounts are verified by an external auditor. States can consult the detailed expenditure in the members' area.

The resources fund the running of the Secretariat, the regional offices, training programmes and technical cooperation.

The five bands (indicative)

Indicative amounts
BandState profileAnnual contribution
1Small market, rich heritage€12,000
2Emerging market≈ €60,000
3Intermediate market≈ €250,000
4Large market≈ €900,000
5World's leading marketup to €2.4M

Milestones

  1. Notice of payment due

    Sent to the focal point.

  2. Deadline

    Payment before this date.

  3. Assembly

    Financial report.

  4. Audit

    Closing of the accounts.

Scale under review

Bowl (1300s)
Bowl (1300s)
Seven Jeweled Mountain (late 1800s)
Seven Jeweled Mountain (late 1800s)
Sea Lion Pup Vessel (200–850 CE)
Sea Lion Pup Vessel (200–850 CE)

Bank transfer or direct debit

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

Bank transfer

Initiated by the State
  • Reference given on the notice
  • No fixed fees
  • Processing time

For States that prefer to control the date.

Persian Quatrains (Rubayi) and Calligraphic Exercises (recto), Sultan Muhammad Khandan (c. 1509–59)

Direct debit

Automatic
  • Signed mandate
  • Nothing overlooked
  • Debited on the scheduled date

For regular payment.

Paying your contribution

  1. Receive

    The notice of payment due.

  2. Check

    The band and the amount.

  3. Choose

    Bank transfer or direct debit.

  4. Pay

    Before 31 March.

  5. Keep

    The proof of payment.

Before 31 March

A finance director

Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s)
« The banded scale allowed us to build the contribution into a stable budget trajectory. »
Claire Fontaine, finance director at a ministry (example)

Vocabulary

Scale
Contribution grid by band.
Pro rata
Calculation proportional to duration.
Payment schedule
Calendar of instalment payments.
External audit
Review of the accounts by a third party.

In case of difficulty

A State facing a temporary difficulty may request a payment schedule. The Directorate examines the request with the Council and proposes a realistic timetable.

A delay of more than twenty-four months results in the loss of the right to vote, as detailed on the page Suspension.

Frequently Asked Questions

Is the scale public?

It is detailed in the members' area.

Can payment be made in instalments?

Yes, on request for a payment schedule.

What does the contribution fund?

The running and the programmes of the Organisation.

Where can I see the accounts?

Useful Documents

Contacts

Sketch of the Labyrinth of the Villa Pisani, Francesco Guardi (1773–1778(?))
Sketch of the Labyrinth of the Villa Pisani, Francesco Guardi (1773–1778(?))
Member States Relations DirectorateParis — Headquarters+33 1 00 00 08 00membres@oimap.exampleMonday to Friday, 9 a.m.–5 p.m.

See the detailed scale

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

Bands and criteria.

Scale
Image credits (17)
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • The Dance at the Court of Herod, Israhel van Meckenem (c. 1500) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • Headdress Mask: Buffalo (c. 1910) — Cleveland Museum of Art, CC0 1.0
  • Arrival of the "Southern Barbarians" (c. 1600) — Cleveland Museum of Art, CC0 1.0
  • Bowl (1300s) — Cleveland Museum of Art, CC0 1.0
  • Seven Jeweled Mountain (late 1800s) — Cleveland Museum of Art, CC0 1.0
  • Sea Lion Pup Vessel (200–850 CE) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • Persian Quatrains (Rubayi) and Calligraphic Exercises (recto), Sultan Muhammad Khandan (c. 1509–59) — Cleveland Museum of Art, CC0 1.0
  • Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s) — Cleveland Museum of Art, CC0 1.0
  • Sketch of the Labyrinth of the Villa Pisani, Francesco Guardi (1773–1778(?)) — Cleveland Museum of Art, CC0 1.0
  • Coronation of the Virgin, Christoffel Jegher (1632–36) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • Portrait of Gianfrancesco Gonzaga di Ròdigo, 1443–1496, Lord of Sabbionetta (reverse), Antico (1479) — Cleveland Museum of Art, CC0 1.0
  • Medal Commemorating Commodore Oliver Hazard Perry (1785-1819) and the Battle of Lake Erie, Moritz Fürst (1813) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
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