Welcome to the site. I will be helping you today.
Yes, you can do it yourself. The rules and taxes are already part of the payments you are making and the forms you get, like the 940 and 941.
Once you learn how, changes in the laws are made pretty apparent from the government tax agencies. Make sure you know what you are doing first, since there are surprising penalties for missing payments, missing deadlines and the like, but it can be done.
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