Contrived example: Alice and Bob both work for Charlie, who runs a lawnmowing service. Charlie bills $100 plus 10% GST/VAT for the job. If Alice does the job, she gets $50 - if Bob does the job, he gets the $50. At the end of the month, the GST has to be remitted to the government agency. How does Charlie track the GST?

Charlie happens to be using ledger (https://www.ledger-cli.org/) but this question is about double-entry accounting, not the software.

Let's just say that Charlie is better at mowing lawns than accounting... but he's always willing to learn :-)

2019-01-01 invoice customer for Alice's work
    ; the customer is billed, and the total amount (GST included) is
    ; posted to Accounts Receivable.  Note there is no GST liability
    ; until the customer pays the bill.
    Assets:Accounts Receivable                110.00
    Income:Alice                             -110.00

2019-01-02 customer pays invoice
    ; the outstanding figure in Accounts Receivable is cleared to the
    ; bank account.  We now have a GST liability - but how do we
    ; properly account for this?
    Assets:Bank Account                       110.00
    Assets:Accounts Receivable               -110.00
    Liabilities:GST:Collected                 -10.00
    HELP PLEASE                                10.00

2019-01-03 pay Alice
    ; Alice gets paid - not complicated, that's an expense.
    Expenses:Salary                            50.00
    Assets:Bank Account                       -50.00

2019-02-01 remit GST
    ; the GST liability is cleared
    Assets:Bank Account                       -10.00
    Liabilities:GST:Collected                  10.00

Here are our balance sheets after each transaction:

After first transaction (customer invoiced):

         110  Assets:Accounts Receivable
        -110  Income:Alice

After second transaction (customer paid):

         110  Assets:Bank Account
          10  HELP PLEASE
        -110  Income:Alice
         -10  Liabilities:GST:Collected

After third transaction (Alice paid):

          60  Assets:Bank Account
          50  Expenses:Salary
          10  HELP PLEASE
        -110  Income:Alice
         -10  Liabilities:GST:Collected

After fourth/final transaction (GST remitted):

          50  Assets:Bank Account
          50  Expenses:Salary
          10  HELP PLEASE
        -110  Income:Alice

The first question pertains to the obviously named account "HELP PLEASE".

There is an additional (albeit intrinsically related) question: how do we track how much GST was paid? When we pay GST, does this count as an Expense?

  • You might want to add a country tag. I track GST (Canada) separately from revenues & expenses. Sales and revenue $100. Tax collected is $10. Tax paid (Input tax Credits) $0 . Net tax due $10. In Canada GST is accounted for as of invoice date, regardless of when the customer pays the invoice- if it's a bad debt you reclaim it. – Spehro Pefhany Jan 27 at 17:37
  • Charlie runs his business on "cash basis" (as distinct from accrual basis) - this means income is only recognised when it is received (rather than when it was invoiced). @SpehroPefhany: I have added the country tag as you suggested. fyi: an Australian business can choose to use either cash or accrual basis. – Emilio Reed Jan 28 at 0:12

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