If total accumulated federal employment taxes reach $100,000 or more on any day during a regular deposit period, the employer must deposit the taxes on the next banking day after the date on which the tax liability exceeds $100,000. The accumulation period runs from the first day of a regular deposit period and does not cross over the last day of that regular deposit period.
If a monthly depositor becomes subject to the accelerated deposit rule, he becomes a semi weekly depositor on that day and remains so for the remainder of the current calendar year and for the following calendar year.
