Are Font Foundry Licenses Deductible as One-Time or Recurring Costs?

Both — it depends entirely on how the specific font license is structured, since font foundries sell licenses using different models, and the deduction simply follows whichever payment structure you actually have. Some font licenses are sold as a one-time purchase that grants perpetual use rights, similar to buying a piece of software outright — these are deducted in full in the year you pay for them, the same as any other one-time business supply or software purchase. Other font services...