Gill Edelman, who is interim chair of the MPTS, says she hopes the new guidance will support consistent and well-reasoned decisions in cases of sexual misconduct.
"Hearings involving allegations of sexual misconduct remain an area of scrutiny and concern," she said.
"We recognise the impact tribunal decisions have on doctors and on complainants.
"It is therefore paramount that our tribunals reach fair, proportionate and transparent decisions and that there is clarity for all concerned in the range of outcomes that can be expected."
The new guidance means that for the first time, the members of the tribunal will have to consider what are described as "sanctions bandings".
That is meant to indicate the range of outcomes that can be expected in different types of cases, once a tribunal has decided whether a doctor poses a low, medium or high level risk to the public.
There is also more detail about assessing how serious an allegation is, and what features may increase seriousness.
For example, allegations involving sexual assault, improper relationships or violence will usually fall at the higher end of the spectrum.
The guidance also means that persistent or repeated behaviour, and behaviour directed towards a vulnerable person, may increase seriousness.