Oostindie puts the House of Orange's colonial income at about €576 million

Gert Oostindie presented a three-year study in Leiden on Friday, 2 October, that estimates the House of Orange-Nassau earned the equivalent of nearly 576 million euros from Dutch colonial rule between 1600 and 2025. About 566 million of that, the researchers said, came from the former Dutch East Indies. The rest came from territories once held through the Dutch West India Company, including parts of West Africa and the Americas. The king who ordered the work, Willem-Alexander, called the conclusions heartbreaking and confronting.

The study was commissioned by the king, who opened the royal archives and paid for the inquiry. It runs to about 2,000 pages in five books. Oostindie, the lead researcher, said at the Academy Building that every stadtholder, king and queen at least through Wilhelmina was convinced colonialism was legitimate and important to the Netherlands. He said all of them treated colonial warfare and the violent suppression of uprisings as unavoidable and justified. Stadtholders and King William I, he said, raised no objection to the trade in enslaved people or to slavery itself.

Where the money actually sat

The headline figure is easy to misread as profit from the Atlantic slave trade. The study says the opposite about the direct take. The House earned virtually nothing straight from the trans-Atlantic trade or from Caribbean slavery, not because it opposed either, but because it was unsuccessful at them. Most of the income did not come from the East India Company or the West India Company in the seventeenth and eighteenth centuries. It came later, from the Netherlands Trading Society and the Billiton company in the nineteenth century, out of the East Indies.

That split is the finding a reader will not get from a one-line summary. Of the 576 million, roughly 566 million is an East Indies figure. The Atlantic and Caribbean share is the remainder, and within that remainder the direct slave-trade line is close to zero. Oostindie also said that while monarchs voiced support for the colonial system, few of them had a direct hand on policy. Support, in the archive, is not the same as a signature on a cargo.

What the king said, and what he did not

Willem-Alexander received the books at the ceremony. "I cannot change the past, but I can make a positive contribution to the present and the future to the best of my ability," he said. He did not announce a payment, a fund or a change in the civil list. The act he had already taken was the commission itself: access to the archive, and a public handover in Leiden rather than a closed briefing at the palace.

The Dutch state has spent the past several years in its own argument about colonial reparations and about apologies for slavery, separate from the royal household's books. This report is about the House, not about the national budget. It covers four centuries and converts historic receipts into a modern euro total, which means the 576 million is an estimate in today's money, not a balance that sat in one account. The researchers' own caution is in the composition. Almost all of it is East Indies income from nineteenth-century companies. Almost none of it is a direct Caribbean slave-trade dividend. Both sentences are in the same study, and both are needed to read the number.