Step-by-step explanation:
The journal entry to record the uncollectible is shown below:
On December 31
Bad debt expense $800
To Allowance for doubtful debts $800
(Being the bad debt expense is recorded)
The computation is shown below:
= Sales × estimated percentage - credit balance of doubtful accounts
= $280,000 × 0.5% - $600
= $1,400 - $600
= $800