The tax forms won’t clarify matters, though. Schedule 1 in Form 1040 asks taxpayers if they have “any financial interest in any virtual currency” without a definition or an indication of what to do next. While many will check with the IRS for a clarification or simply assume the tax bureau is referring to crypto, this could lead to confusion for gamers who aren’t sure if their in-game cash needs to be declared.

The ambiguity has prompted calls for the IRS to explicitly outline its approach to in-game currency, and it might need to take action relatively soon given the sheer volume of transactions in games. Fortnite alone racked up an estimated $1.8 billion in worldwide revenue in 2019 from people buying season passes and cosmetic gear. While only a fraction of in-game currency use is likely to be of any concern to the US government, the numbers might grow too large for officials to ignore.