Anthropic Expects $3.8B Tax Obligation From RSU Settlement

The scale of the RSU-related tax bill is the signal here: it suggests Anthropic's private valuation has translated into substantial employee equity value, and the settlement mechanics are now a material balance-sheet event rather than an HR footnote. The absence of a timeline leaves open how the liability is funded and whether it constrains cash available for compute and hiring. The customer disclosure — roughly 250 accounts each above $10 million over the past year — is the more commercially relevant figure, pointing to a concentrated enterprise base. Whether that concentration deepens or broadens is the open question.