Dutch Royal House earned nearly €576 Million from colonial system

LEIDEN, Netherlands--The House of Orange-Nassau earned the modern-day equivalent of nearly €576 million from the Netherlands’ colonial system, while generations of Dutch royals supported colonial expansion, slavery and the violent suppression of resistance, according to a major new investigation commissioned by King Willem-Alexander.

The findings were presented to the King on Friday, October 2, at Leiden University following nearly four years of research involving approximately 60 researchers. The investigation examined the relationship between the House of Orange-Nassau and Dutch colonialism from around 1600 through the post-colonial period.

The research concludes that successive stadtholders, kings and queens, at least through Queen Wilhelmina, regarded colonialism as legitimate and important to the Netherlands. Lead researcher and colonial historian Gert Oostindie said members of the House of Orange also considered colonial warfare and the violent suppression of uprisings justified, while the stadtholders and King William I raised no objections to slavery or the trade in enslaved people.

Financially, researchers calculated that the House of Orange-Nassau received colonial income equivalent to almost €576 million when indexed to 2024 values. Almost €566 million of that total came from the former Dutch East Indies, now Indonesia.

The findings provide an important clarification about the royal family’s direct earnings from slavery. Researchers found that relatively little of the money came directly from the transatlantic slave trade or slavery in the Caribbean. Instead, the overwhelming majority of the calculated wealth came from the wider colonial economy, particularly during the nineteenth century.

Much of the income was linked not to the Dutch East India Company, VOC, or the Dutch West India Company, WIC, during the seventeenth and eighteenth centuries, but to later enterprises including the Netherlands Trading Society and the Billiton Company. King William I and his grandson Prince Hendrik were involved in establishing those companies, placing members of the royal family directly within the financial structure of Dutch colonialism.

The investigation also found that the royal family's involvement went beyond financial gain. Dutch monarchs supported overseas expansion and colonial wars, received goods and other benefits from the colonies, built collections using colonial connections and helped give the Dutch colonial empire royal legitimacy and prestige.

The degree of direct political control varied significantly over time. King William I, who reigned from 1813 to 1840, was identified as having a particularly direct role in colonial affairs. As parliamentary power expanded during the nineteenth century, later monarchs had less direct control over government policy, but researchers found little evidence of opposition from the royal household to the colonial system.

The study was initiated by Willem-Alexander in 2022. Researchers were given access to relevant material in the private archives of the Royal House, while an independent committee determined the research framework and selected the researchers. According to the Royal House, it had no involvement in determining the findings or wording of the conclusions.

The project has resulted in five books covering the royal family's political, financial and social relationship with colonialism. They include the public-volume Oranje en de Koloniën, 1600-2025, or The Dutch Monarchy and Its Colonial History, 1600-2025, by Oostindie, as well as studies examining colonial power and profits and the experiences of people living under Dutch colonial rule in Indonesia, Suriname and the Caribbean.

King Willem-Alexander described the conclusions presented to him as confronting. The findings come three years after he formally asked forgiveness for the failure of his ancestors to act against slavery during the Netherlands' national commemoration of the slavery past in July 2023.

The new investigation significantly expands the historical record by examining not only slavery, but the financial, political and symbolic role played by the House of Orange-Nassau across more than four centuries of Dutch colonial rule.

Photo: His Majesty King Willem-Alexander and Professor Gert Oostindie (right)