How much are patent fees reduced for small entities?

According to MPEP 509.02, fees for small entities are reduced by 50% for most patent-related fees. The MPEP states:

The fees which are reduced by 50% for small entities include patent application filing fees including the basic filing fee, search fee, examination fee, application size fee, and excess claims fees (37 CFR 1.16), extension of time, revival, and appeal fees (37 CFR 1.17), patent issue fees (37 CFR 1.18), and maintenance fees on patents (37 CFR 1.20).

Additionally, certain PCT international stage fees are also eligible for the 50% reduction for small entities.

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