What is the tax liability deposit threshold amount that I must deposit money in the bank instead of paying the amount with my quarterly 941 payroll reports ?

If the tax liability for a quarter is less than $2,500, it may be paid with the quarterly filing of Form 941. If the withholding is $2,500 or more, then it must be deposited on either a monthly or semi-monthly basis. The IRS will notify you each November as to whether you are a monthly or semi-monthly depositor. The IRS uses a one year look back period ending the preceding June 30th.