How long after getting your can you wait to get masters degree without losing credit hours?

There's no universal timeframe for how long you can wait after getting your bachelor's degree before starting a master's program without losing credit hours. The answer depends entirely on the specific policies of the university offering the master's program.

Some universities might have no time limit, while others might have a limit of a few years (e.g., 5 years). You must check the admissions requirements and policies of the particular master's program you are interested in. Contact the graduate admissions office of the university directly to confirm their policy.