1 - Which estimate of the allowance is used without adjusting it and which estimate of the allowance is adjusted?

2 - Which estimate finds the ENDING BALANCE of the allowance account?

3 - Before posting the end of the period allowance can the allowance account have a debit balance? If so what must occur if AFTER posting the allowance journal entry the balance in the Allowance account is still a debit?

4- What are three possible names for the account used for the expense of your customers not paying the company their bills?