Field Notes · 9 June 2026

Fee haircuts before you trust the ending balance

Deposit, withdrawal, and claim fees change stablecoin interest projections more than many holders expect.

A programme can post a fair APY and still disappoint after fees. Smart Crypto Calculator PC will not invent those fees; you have to type them.

Three places fees hide

  1. On the way in — deposit or conversion charges that reduce starting principal.
  2. On the way out — withdrawal fees flat or percentage-based.
  3. On each claim — costs to move rewards into a spendable balance.

Modelling choices

Apply inbound fees by lowering principal before the run. Apply outbound fees as a reduction on the projected ending balance. Claim fees need an assumption about how often you claim; we often show both “claim weekly” and “claim once at end.”

Bring numbers, not vibes

If the fee schedule is a PDF scan, send it before the session. Guessing a “small” fee is how comparison tables quietly lie.