On December $29,2020$ an emp

oyee received $$5,000$ check from her employer's client. The check was payable to the employer. The employee did not remit the funds to the employer until December $30,2020.$ The employer deposited the check on December $31,2020,$ but the bank did not credit the employer's bank account until January $2021.$

In $\_\_\_$ because a check received $\_\_\_$ considered a cash equivalent and a cash basis taxpayer must recognize the income when the check is