1. Basic concepts

this purposes, a voucher is used. A voucher is an identification which is assigned to all amounts recorded in scope of one transaction. For example, the last transaction uses the “Voucher_4” identification. The transaction will look as follows:

When we look at the Cash account, we can get the following information:

So now, to answer the question why our cash account was decreased by $850, we should search

through all the accounts and find where the Voucher_4 identification is available. In our case, it is the Super Market account. On the basis of the voucher identification, we restore the following transaction: Cash => $850 => Super Market. So, the cash account is decreased because the company paid to the Super Market vendor.

Selling Pizza

Let’s look how the company sells. Taras receives the first order for 1 pizza which costs $15. Let us assume that Taras has already purchased an electric oven for $1000. The updated circle will look as follows (the transaction is similar to the vehicle purchase):

Figure 1.5 Company balances after purchase