Once you've set up a petty cash or cash drawer account, you need to put money into it, and then record that money transfer in QuickBooks.
To do this task, you can:
Write a check
Use an ATM machine or debit card to get cash, then transfer the funds to your petty cash account in QuickBooks.
What if later on I need to increase or decrease the base amount in a cash drawer?
As you receive cash from your daily sales, the transactions you record will increase the Undeposited Funds account.
You can increase or decrease the balance (base amount) in the cash drawer account, but you must be sure to record a transaction when you
make the deposit.
If you're increasing the base amount of cash in the cash drawer, enter an additional line on your daily deposit
that includes the cash drawer account and the amount of the increase to the cash drawer's base amount. Since your
deposit transaction is going into your bank account, enter this amount as a negative number indicating that you are
holding back cash from the bank deposit and putting it into the cash drawer account.
If you're decreasing the base amount of cash in the cash drawer, you'll have additional cash to deposit.
When you record your deposit, enter an additional line on the deposit that includes the cash drawer account and the
amount of the decrease in your base amount. Enter the amount as a positive number.
Record petty cash expenses or cash drawer pay-outs