Tipping a locksmith isn't customary. There are however times when tipping can make sense. ... In case of emergency jobs, giving them a tip for their trouble can be the right thing to do. The usual tipping amount is around $20.

Should Plumbers be tipped?

Contractors (electricians, plumbers, etc.)

Most of the time it isn't necessary to tip an electrician or plumber, Mayne says. "However, if they do anything extra or spend more time than expected, a tip is always appreciated, with the minimum being $20."

Do locksmiths rip you off?

Even if you are in a lockout situation and you feel panicked, keep your cool and ask the locksmith to give you a full list of all potential charges. If they avoid your question or try to charge you more than they gave you for the estimate, chances are, the locksmith is ripping you off.