To obtain a polyester film for a decorative laminated sheet or decorative sheet which prevents the generation of noxious fumes at the time of incineration and reveals a picture pattern with an elaborate design, regardless of color tone of a base material and superior in a dimensional stability.

This film is used for a film layer of a decorative laminated sheet comprising at least a film layer and a pattern printing layer arranged sequentially on the surface of the base material. In this case, a permeation concentration is 0.1-5.0 and both vertical and lateral shrinkage ratios after heat treatment of 180°C for 5 minutes are -10.0% or more and +10.0% or less.