AWC’s Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings prescriptively limits cantilevers based on the following conditions, where L is the length of the simple span, center to center of bearing and d is the depth of the joist:

Loadbearing wall, shear wall or non-shear wall <= d

Non-loadbearing, shear wall or non-shear wall <= L/4

Non-loadbearing shear wall <=4d