It is mid-September 2026: school started again two weeks ago, and in Year 3 of the AFM track (Amministrazione, Finanza e Marketing, the business-studies stream of Italian technical schools) the business economics programme (economia aziendale) is already in full swing. No more of the commercial calculations of Years 1 and 2, with proportions, apportioning, invoices and interest. Now it is double-entry bookkeeping (partita doppia), the method for recording every business event of a company. The first real tests arrive in about a month and a half, around the turn of October and November, and they decide whether the rest of the year is built on solid ground.
It is the steepest step of the three business years. In Years 1 and 2 the logic was arithmetic: work out the proportion, apply the percentage, find the result. From here on it is a language with rules of its own, and anyone who learns it by heart instead of understanding it forgets it at the first exercise that is not identical to one already seen. The good news: double entry is understood once, with a precise method, and from then on it always works, even on exercises that the book has not yet proposed.
The basic idea: why debit and credit must always balance
Every business event (a purchase, a sale, a payment, a receipt) is observed from two aspects together, never just one:
- the financial aspect: what happens to money, receivables and payables. Does cash come in or go out? Does a receivable arise or get settled? Does a payable arise or get settled?
- the economic aspect: what happens to the company’s income. Does a cost or a revenue arise?
The method records both aspects of the same event, for the same amount, in two opposing sections of different accounts: Debit (Dare) and Credit (Avere). They are not “positive” and “negative”; they are the two halves of one and the same observation. That is why, at the end of every entry, the total of the debits must be identical to the total of the credits: if it is not, you have not got a nuance wrong, you have recorded only half an event.
This equality is not a final check done out of scruple: it is the very definition of the method. If one day the books do not balance, the problem is not a calculation error; it is an aspect of the business event that you forgot to record.
The method for never getting the side wrong
The question that decides the grade is not “debit or credit?” taken in the abstract. It is which of the two accounts involved records the increase and which the decrease, and in which section. The method that always works is this, in two steps, always in the same order:
- Identify the financial aspect first. What happens to money, receivables, payables? Is cash or bank money coming in or going out? Is a receivable from someone arising or being settled? Is a payable to someone arising or being settled?
- Only then, ask about the economic aspect. If the event is “new” (a purchase, a sale), a cost or a revenue also arises, for the amount net of VAT (IVA, Italian value added tax). If the event is the closing of something already recorded (a payment, a receipt), no new cost or revenue arises: the income side was already written when the event arose, not when it was closed.
Point 2 is what the test uses to tell who has understood from who has memorised a sequence of exercises: paying a debt and buying goods are different events, even if in both of them something “goes out” in a loose sense. The first has no economic effect, because the cost was already recorded before; the second does. You will see it in the examples below.
How the accounts work
Once you have decided the aspect (financial or economic) and the direction (increase or decrease), the section is mechanical: you do not choose, you apply.
| Type of account | What it represents | Increases in | Decreases in |
|---|---|---|---|
| Financial asset | Money and receivables: Cash (Cassa), Bank current account (Banca c/c), Trade receivables (Crediti v/clienti), VAT receivable (IVA a credito) | Debit | Credit |
| Financial liability | Payables: Trade payables (Debiti v/fornitori), Bank payables (Debiti v/banche), VAT payable (IVA a debito) | Credit | Debit |
| Economic: cost | Costs of the year: Purchases of goods (Merci c/acquisti), Wages (Salari), Operating costs (Costi di gestione) | Debit | Credit |
| Economic: revenue | Revenues of the year: Sales of goods (Merci c/vendite), Operating revenues (Ricavi di gestione) | Credit | Debit |
Once understood, this table replaces any attempt to remember “this account goes in debit” case by case, account by account. You do not learn two hundred accounts one by one: you learn four rows, and from there you derive everything.
The chart of accounts: families, not a list to memorise
The book lists dozens of accounts: Cash, Bank current account, Trade receivables, Trade payables, VAT receivable and payable, Purchases and Sales of goods, Share capital, and others as the programme advances. Learning them one by one is the long road, the one that leaves you stuck in front of an account you have never seen in a new exercise.
The short road is to group them by family. There are essentially three:
- Financial accounts: everything concerning money, receivables and payables: where the money is, who has to pay the company, whom the company has to pay.
- Economic accounts of income: the costs and revenues of the year: why the company’s income has gone up or down.
- Economic accounts of capital: the company’s net worth: Share capital, reserves, profit or loss for the year. They are rarely touched in day-to-day operations, mostly at incorporation or at year end, but in their sign they follow the same logic as the financial accounts.
When you meet a new account, the first question is not “what is it called in the book” but “which family does it belong to”. Once you have answered, the table above tells you everything else: aspect, direction, section.
Three worked entries, from purchase to payment
Below are three complete examples, with simple amounts and the ordinary Italian VAT rate of 22%. Before each entry comes the reasoning, never the entry without the reasoning that comes before it.
1. Purchase of goods with VAT, deferred payment
The company buys goods for €1,000. The supplier applies ordinary VAT of 22% (€220): the invoice total is €1,220, and the agreement is to pay later, on credit.
Reasoning. Financial aspect, in two parts: a payable to the supplier arises for the whole invoice amount, €1,220. A payable that arises is a payable that increases, so it goes in Credit. A receivable from the tax authority (Erario) also arises for the VAT paid to the supplier, €220 (VAT receivable): a receivable that increases goes in Debit. Economic aspect: the cost of the goods, net of VAT, €1,000. VAT is not a cost but a recoverable receivable; a cost that arises goes in Debit.
| Account | Debit | Credit |
|---|---|---|
| Purchases of goods (Merci c/acquisti) | 1,000.00 | |
| VAT receivable (IVA a credito) | 220.00 | |
| Trade payables (Debiti v/fornitori) | 1,220.00 | |
| Total | 1,220.00 | 1,220.00 |
Debit and credit balance: €1,220 on both sides. Note the order in which we reasoned: first the payable (financial), then the VAT receivable (also financial: it is still a receivable), finally the cost (economic), never the other way round.
2. Sale of goods with VAT, deferred receipt
The same company sells goods for €2,000. Ordinary VAT at 22% = €440, invoice total €2,440, payment not immediate.
Reasoning. Financial aspect: a receivable from the customer arises for the whole invoice amount, €2,440. A receivable that increases goes in Debit. A payable to the tax authority also arises for the VAT collected on behalf of the State (VAT payable, €440): a payable that increases goes in Credit. Economic aspect: the sales revenue, net of VAT (which here is a debt to be paid over, not a revenue), €2,000, and a revenue that arises goes in Credit.
| Account | Debit | Credit |
|---|---|---|
| Trade receivables (Crediti v/clienti) | 2,440.00 | |
| Sales of goods (Merci c/vendite) | 2,000.00 | |
| VAT payable (IVA a debito) | 440.00 | |
| Total | 2,440.00 | 2,440.00 |
Again €2,440 on both sides, symmetrical to example 1: the purchase put VAT receivable in Debit, the sale puts VAT payable in Credit, same family of account with the opposite direction, because one is a receivable and the other a payable.
3. Payment of the debt to the supplier
A month later, the company pays by bank transfer the whole debt that arose with the purchase in example 1: €1,220.
Reasoning. Financial aspect, again in two parts: money goes out of the bank, and a decrease in a financial asset goes in Credit; the debt to the supplier is settled, and a decrease in a financial liability goes in Debit. Economic aspect: none. Paying a debt is not a cost: the cost had already been recorded in example 1, at the moment of the purchase, not now.
| Account | Debit | Credit |
|---|---|---|
| Trade payables (Debiti v/fornitori) | 1,220.00 | |
| Bank current account (Banca c/c) | 1,220.00 | |
| Total | 1,220.00 | 1,220.00 |
It balances again, and it is the simplest entry of the three, but only if you have understood that here the economic aspect does not appear. The customer’s payment in example 2 is the mirror image: Bank current account in Debit (money comes in, an asset increases), Trade receivables in Credit (the receivable is settled, an asset decreases), for €2,440. Here too, no revenue: it was already recorded at the sale.
The mistakes that cost the test
When tests are marked in November, the same handful of mistakes comes back every year, in every class. It is worth looking at them one by one, because each has a precise cause.
- Swapping debit and credit on VAT. This is the most frequent mistake because VAT seems to “behave the opposite way” to the account next to it. In a purchase, the cost and VAT receivable both go in Debit, because they are a cost and a receivable, that is, two increases; in a sale, the revenue and VAT payable both go in Credit. The way not to go wrong is not to remember the rule case by case, but to apply the table of financial accounts: VAT receivable is a receivable and increases in Debit, VAT payable is a payable and increases in Credit, always, in a purchase and in a sale alike.
- Forgetting the VAT line. Writing only “Purchases of goods to Trade payables” for €1,220, the whole amount, VAT included, is a double mistake: it inflates the cost by €220 that is not a cost, and it makes a real receivable from the tax authority disappear. The VAT line is not optional: it is a third account in the entry, as necessary as the other two.
- Confusing cost and outflow. The cost arises when you buy, not when you pay: this is the heart of examples 1 and 3. Whoever records the cost at the moment of payment is mixing the economic aspect with the financial one, the mistake that the two-step method, applied in the right order, is designed to prevent.
- Confusing revenue and inflow. The same mistake, mirrored: the revenue arises at the sale, not at the receipt that comes later.
- Unbalanced amounts. A wrong addition, a forgotten line, an amount copied wrongly: whatever the cause, the symptom is the same: the total of the debits does not equal the total of the credits. It is the only mistake that reports itself, provided you always check that the two totals coincide: it is not optional, it is how double entry tells you whether you reasoned well.
How we work on this, in lessons
With students who arrive in Year 3 of AFM and face double entry for the first time, the order is always the same: first the reasoning on the two aspects, never the entry from memory, then the table of accounts, then the exercises, from the simplest to those with more lines. Whoever reasons in this order also solves exercises never seen in the same form; whoever memorises a sequence gets stuck at the first detail that changes: a partial payment instead of a full one, a discount on the invoice, the purchase of a capital asset instead of goods.
The destination of what starts now, in Year 3, is the second paper of the State exam (esame di Stato, the school-leaving exam) for the AFM track: financial statements, ratios, business decisions, all built on the same entries that you are learning today. You can get an idea of what it asks, when you get there, with the practice test for the business economics second paper: the correct answer to each question is free, and the step-by-step guided solution unlocks with your first lesson.
Lessons are online and one-to-one, one hour at a time: you will find up-to-date rates and packages on the pricing page. For anyone who wants to try before deciding, there is a free 30-minute introductory call to work out where to restart. You pay offline: bank transfer, Satispay, PayPal, card, Apple Pay or Revolut. The full picture of the business subjects we follow, together with law and economics, is on the page for the humanities and economics-law subjects.
The law programme, in the same year, is that of obligations and contracts; in Year 1 you start from rules, sources and capacity. At university you meet again the graphs of supply and demand.
If in Year 3 double entry has already become an open problem at home, or if you just want to be sure that the method has been properly understood before the real test arrives, write to us: we look together at two or three entries you have already done and tell you honestly where to restart.
