Explain bonus tolerance and shift tolerance in GD&T with practical calculation examples?

Bonus tolerance occurs when a feature departs from its MMC size, adding to the geometric tolerance. If a hole has position tolerance of 0.2 at MMC (10.0), and actual hole is 10.3, bonus = 0.3, total position tolerance = 0.5. Shift tolerance applies when datums are features of size at MMC, allowing pattern shift as datum departs from MMC. If datum hole is 10.0 MMC with actual 10.4, shift = 0.4 allowing entire pattern to shift. Boundary calculations must consider both: Virtual Condition = MMC size minus/plus geometric tolerance for internal/external features.