The 941 should be filed every quarter until the business is closed and a final return is file even if there were no wages being paid unless you filed a 941 indicating wages stopped ... filing an amended 941 would be wise if that is the case. Failure to file them if required will result in nasty penalties being imposed. This January you will file a final 941 & 940 along with a final 1120-S which is due MARCH 15, 2023 if you are a callendar year business.
Also who is completing the W-2 & W-3 if you are no longer using the payroll company ? Remember the 1/31 deadline for those to be done.
