A T-account puts an account title above a horizontal line and separates debit entries on the left from credit entries on the right. It is a teaching and review device, not a separate accounting system. Debit and credit name sides; they do not mean increase or decrease by themselves. Cash normally increases on the debit side, so this simple account has a $1,350 debit balance:
| Cash — Debit (left) | Cash — Credit (right) |
|---|---|
| Beginning balance 1,000 | Payment 250 |
| Receipt 600 | |
| Balance 1,350 |
A liability or revenue account normally increases on the credit side. Assume Accounts Payable begins at zero and has only a $900 credit purchase and a $300 debit payment. Its ending credit balance is $600. Both tables show amounts in US dollars.
| Accounts Payable — Debit (left) | Accounts Payable — Credit (right) |
|---|---|
| Payment 300 | Credit purchase 900 |
| Ending credit balance 600 |
Because the diagram isolates only side and balance direction, a real general ledger retains additional context: dates, references, descriptions, account attributes such as cost center, and controls. Those details preserve an audit trail and support reconciliation. Across both examples, left and right stayed fixed while the normal increase direction changed: debit and credit are sides, not universal plus and minus signs.
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Understand this concept
- Explain a T-account as a visual representation of account entries and balance, not as a separate ledger or a rule that debit means increase.
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Build on these ideas
- Account — Understand
To understand this concept: Required. The diagram represents changes recorded in one account.
- Credit — Understand
To understand this concept: Required. The right side must be identified independently of whether it increases the particular account.
- Debit — Understand
To understand this concept: Required. The left side must be identified independently of whether it increases the particular account.
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