The Italian flat-rate tax regime (regime forfettario) is often presented with a very simple formula: “you pay 15% tax, or 5% for the first few years”. Put that way, it seems almost inevitable to conclude that it is always more advantageous than the ordinary regime. In reality, the comparison is much more complex. First, the 15% rate is not applied directly to turnover, but to income calculated using a profitability coefficient that varies according to the activity carried out. You also need to consider social security contributions, the inability to deduct most actual expenses individually, VAT on purchases that normally cannot be recovered, and the various grounds for exclusion from the regime.

In 2026, subject to the other requirements, the regime remains available to individuals carrying on business, artistic or professional activities whose revenue or fees in the previous year did not exceed 85,000 euros and whose expenditure on employees and other workers stayed within the prescribed gross limit of 20,000 euros. If revenue or fees exceed 85,000 euros during the year but not 100,000 euros, the regime normally ceases to apply from the following year; if they exceed 100,000 euros, exit takes place in the same year and VAT becomes payable from the transactions that cause the threshold to be exceeded.

The 15% rate does not apply to turnover

The first mistake to avoid is thinking that a professional invoicing 50,000 euros simply has to pay:

50,000 × 15% = 7,500 euros

That is not how it works. Under the flat-rate regime, taxable income is determined by applying a profitability coefficient linked to the activity to revenue or fees. The law therefore assigns a deemed portion of turnover to income and implicitly treats the remainder as costs. Compulsory social security contributions actually paid are then deducted from the income thus determined; the resulting amount is subject to substitute tax at 15%, or 5% when the requirements for new activities are met. For many professional activities, for example, a profitability coefficient of 78% is used. This means that, on fees of 50,000 euros, the initial flat-rate income is:

50,000 × 78% = 39,000 euros

The remaining 22%, or 11,000 euros, is implicitly treated by law as costs. There is no need to prove that you actually incurred 11,000 euros in expenses: taxable income remains 39,000 euros whether actual costs were only 2,000 euros or, conversely, 20,000 euros. This is one of the most important criteria for understanding when the flat-rate regime can be advantageous. Imagine two professionals who both invoice 50,000 euros and have the same 78% coefficient. The first works from home, uses a computer already purchased and incurs only 4,000 euros in actual annual costs. The second pays for an office, buys equipment, uses other workers and incurs 20,000 euros in real costs. Under the flat-rate regime, the initial income is identical for both:

50,000 × 78% = 39,000 euros

The first, however, has actually incurred only 4,000 euros in expenses. For tax purposes, 11,000 euros in costs are implicitly recognised, far more than was actually spent. The second has incurred 20,000 euros in costs but, for the flat-rate income calculation, continues to be treated as though those costs were 11,000. Clearly, the first person receives a much greater structural advantage. The regime therefore tends to be particularly attractive for high-margin activities with few actual costs, as may be the case for many professionals, consultants, IT specialists or other service businesses. When an activity requires substantial purchases of goods, equipment, rent, employees or other actual costs, the comparison with the ordinary regime becomes much less clear-cut.

The coefficient varies by activity

Not every activity has the same coefficient. The regime's logic is precisely to assign different deemed profitability levels according to the sector. Some trading activities have lower coefficients because lawmakers assume costs account for a larger share; many professional activities instead have higher coefficients. In 2026, there is also a technical feature arising from the introduction of the ATECO 2025 classification: until new coefficients based on the new classification are approved, legislation provides for continued use of the coefficients in Annex 4 to Law No. 190/2014, identified by the corresponding activity under the previous ATECO 2007 classification. This detail also shows why simply saying “under the flat-rate regime you pay 15%” makes no sense. Two people with the same turnover can have very different taxable bases because they carry out different activities.

You do not qualify for 5% simply because you have just registered for VAT

The regime provides a reduced 5% rate for the tax period in which the activity begins and the following four, but only if specific conditions are met. Among these, the taxpayer must not have carried on an artistic, professional or business activity in the previous three years; the new activity must not merely continue previous employment or self-employment, subject to the exceptions for compulsory professional training; and, when continuing an activity previously carried on by someone else, the revenue or fee requirements must be met. This point is often underestimated. Obtaining a new VAT number does not automatically entitle you to 5%. Imagine, for example, someone employed in marketing who leaves their job and immediately becomes self-employed while continuing substantially the same activity. Assessing whether this is a “mere continuation” becomes crucial. A formal change in how the work is performed is not enough. Without the requirements for 5%, substitute tax is ordinarily 15%.

The most frequently forgotten cost: INPS

When someone says “I am on the flat-rate regime and pay 15%”, they are often referring only to substitute tax and overlooking one of the most significant outgoings: social security contributions. Tax and social security are two different things. A self-employed professional without a dedicated professional pension fund, enrolled exclusively in INPS's separate social security scheme (Gestione Separata) and not covered by other compulsory schemes, is subject in 2026 to an overall rate of 26.07% on income assessed for contributions; for professionals who are pensioners or already covered by another compulsory social security scheme, the INPS rate for 2026 is 24%. The system is different for artisans and traders. In 2026, the pension contribution rate is 24% for artisans and, including the specific additional contribution, 24.48% for traders; there is also a contribution calculated on a minimum income base that remains payable even when actual income is below that minimum. In other words, INPS contributions can have a much greater financial impact than substitute tax.

An example: turnover of 50,000 euros

Consider a professional enrolled in Gestione Separata, with a profitability coefficient of 78%, no other compulsory social security coverage and a flat-rate tax rate of 15%. Fees: 50,000 euros. Flat-rate income before contributions:

50,000 × 78% = 39,000 euros

In simplified terms, social security contributions are calculated under Gestione Separata rules on the relevant income. At a rate of 26.07%, the approximate amount would be:

39,000 × 26.07% ≈ 10,167 euros

Compulsory contributions paid are deductible from income determined under the flat-rate regime. Assuming, for simplicity, that the full amount in the example can be taken into account, the substitute-tax base would become:

39,000 − 10,167 = 28,833 euros

Substitute tax at 15%:

28,833 × 15% ≈ 4,325 euros

The combined burden of the two components would therefore be approximately:

10,167 + 4,325 = 14,492 euros

The example is deliberately simplified and does not replace an actual contribution calculation, but it clearly illustrates the point: saying “I pay 15%” would give a completely misleading picture of the total outflow. If the same person qualified for the 5% start-up rate, keeping the same figures for simplicity, substitute tax would become:

28,833 × 5% ≈ 1,442 euros

The advantage over 15% would be considerable. But the social security contributions in the example would remain around 10,167 euros. This is essential for anyone becoming self-employed: the 5% rate makes income taxation very light, but does not mean the entire tax and social security burden is 5%.

Artisans and traders: the minimum changes the calculation

For artisans and traders, social security contributions follow a different structure from Gestione Separata. INPS sets a minimum income base on which contributions are payable regardless, even when actual income is very low or negative; the prescribed rates are then applied to income above that minimum. This means opening a small trading business with very low turnover can produce an apparently paradoxical result: substitute tax may be minimal, while social security contributions remain a very significant expense. That is why, when assessing a small business's viability, you should always ask which social security scheme will I belong to? This is often more important than the tax rate. Artisans and traders applying the flat-rate regime may, subject to the prescribed conditions, request a specific reduced-contribution social security regime involving a 35% reduction in contributions due. INPS has confirmed that this mechanism also applies in 2026 to those who continue to meet the requirements, noting that it is optional.

It certainly provides a cash-flow advantage, but should not be seen simply as “saving 35%”. Paying lower contributions can also affect future pension entitlements and, depending on the circumstances, the contribution periods credited. The choice should therefore be evaluated as a pension decision, not merely a tax decision. Nor should this reduction be confused with Gestione Separata: it is not a general 35% discount for everyone using the flat-rate regime.

Actual expenses are not deducted individually

Another fundamental feature is that, apart from specific exceptions such as compulsory social security contributions, actual expenses are not normally subtracted individually from turnover. If a professional buys a computer for 3,000 euros, pays 8,000 euros in office rent and spends 5,000 euros on software and consultancy, their flat-rate income does not automatically fall by 16,000 euros. The coefficient continues to determine the income share on a deemed basis. This can be an enormous advantage when actual expenses are below the cost percentage implicitly recognised by the coefficient, but becomes a disadvantage when actual costs are much higher. The flat-rate regime therefore particularly favours activities with a light cost structure.

Not charging VAT on sales can be an advantage

A taxpayer under the flat-rate regime does not charge VAT to customers on ordinary domestic transactions covered by its rules. This can be particularly attractive for activities serving end consumers, because it allows a competitive final price without adding ordinary VAT. Suppose a professional under the ordinary regime needs to charge:

100 euros + 22% VAT = 122 euros

to the consumer. Under the flat-rate regime, they can ordinarily invoice 100 euros without charging that VAT. This can be a significant commercial advantage in B2C, where the customer cannot recover VAT. The position reverses when the flat-rate taxpayer purchases goods and services. The rules provide that flat-rate taxpayers are not entitled to deduct input VAT. So if a computer is purchased for: 2,000 euros + 440 euros VAT, the total cash cost to the flat-rate taxpayer is 2,440 euros, and the 440 euros in VAT is not recovered through periodic VAT settlements. For someone under the ordinary regime, subject to the conditions for deductibility, that VAT could instead be deducted. This difference becomes very important for activities requiring substantial investment.

A professional who works almost entirely with their own computer may be little affected. A business buying tens of thousands of euros' worth of goods, equipment and services, however, may face a very significant VAT cost. Imagine two otherwise identical professionals. The first works almost exclusively with private individuals. The second works only with large businesses subject to VAT. In the first case, not charging VAT on invoices can provide a real commercial advantage because private customers primarily look at the final price. In the second, the advantage is much more limited. A business customer that normally deducts VAT primarily looks at the pre-VAT price: paying 1,000 euros plus deductible VAT can be economically similar, in net-cost terms, to paying 1,000 euros to a flat-rate taxpayer. This is why the regime can be commercially much more attractive in B2C than in B2B, at least from a VAT perspective.

85,000 euros does not mean you can comfortably invoice up to 100,000 every year

The two thresholds serve different purposes. The ordinary threshold for the regime is 85,000 euros in revenue or fees. If it is exceeded, but the amount remains within 100,000 euros, the taxpayer normally finishes the year under the regime and moves to the ordinary regime the following year. 100,000 euros, by contrast, is the immediate-exit threshold. If it is exceeded during the year, the regime ends in the same tax period and VAT becomes payable from the transactions that cause the threshold to be exceeded. Saying “the flat-rate regime's limit is 100,000 euros” is therefore technically incorrect. The normal entry and continued-eligibility threshold remains 85,000 euros.

The employment-income limit in 2026

One of the grounds that can prevent entry into or continued use of the flat-rate regime is exceeding a specified threshold of employment and equivalent income received in the previous year. For 2025 and 2026, this threshold has been temporarily raised to 35,000 euros.

Consequently, someone who combines self-employment under a VAT number with employment cannot simply check compliance with the flat-rate regime's 85,000-euro revenue or fee limit. They must also check whether any employment-income exclusions apply.

The rules nevertheless provide some exceptions, particularly where the employment relationship has ended. The assessment therefore cannot be made solely by looking at the amount received: the actual employment situation and the statutory conditions must also be considered.

Watch the relationship with a former employer

The regime also contains a specific exclusion for people whose activity is carried on predominantly for employers with whom they currently have an employment relationship or had one in the previous two tax periods, as well as for persons connected with those employers, subject to statutory exceptions. The aim is to prevent ordinary employment relationships from simply being converted into self-employment to benefit from a more favourable tax regime. This again shows why becoming self-employed cannot be assessed by considering the rate alone.

Not all personal tax credits work in the same way

The flat-rate regime's substitute tax replaces personal income tax (IRPEF), its surcharges and regional business tax (IRAP) on income covered by the regime. This means many ordinary IRPEF tax credits cannot directly reduce substitute tax. Consider, for example, someone with high medical expenses or substantial building-renovation tax credits. If they also have income subject to ordinary IRPEF, they may have tax against which to use those credits; if their income is almost entirely subject to the flat-rate substitute tax, they may have less IRPEF liability available to absorb them. The assessment must therefore also consider the individual's overall tax position.

The flat-rate regime may be unattractive when costs are very high

Consider a simplified example involving two professionals with turnover of 70,000 euros and a coefficient of 78%. Flat-rate taxable income before contributions:

70,000 × 78% = 54,600 euros

The regime implicitly assumes costs of:

70,000 − 54,600 = 15,400 euros

If the professional actually incurs only 5,000 euros in costs, the flat-rate calculation is very favourable: for tax purposes, they benefit from a deemed cost allowance greater than their actual costs. If instead they spend 35,000 euros on rent, other workers, software, travel and equipment, the regime continues to tax them on the same deemed base. Under the ordinary regime, many of those costs, if business-related and tax-deductible, could reduce taxable income. This does not automatically mean the ordinary regime would be better, because IRPEF, surcharges, VAT, tax credits and social security must all be compared. But it shows why the amount of actual costs is one of the first pieces of information needed. Saying “flat-rate 15%, ordinary 43%” is an incorrect comparison. The 43% rate is only the IRPEF rate applicable to the portion of income falling within the highest statutory bracket; it is not necessarily the rate applied to all income. Furthermore, under the ordinary regime, revenue is taxed net of deductible expenses, input VAT can be recovered where permitted, and IRPEF deductions and tax credits may apply.

The proper comparison must be based on the actual total burden, rather than placing side by side two rates applied to completely different bases. Although no rule can cover everyone, the flat-rate regime tends to become economically very attractive when several features combine: actual costs are low relative to those implicitly recognised by the coefficient, there are few VAT-bearing expenses, private customers benefit from VAT-free pricing, turnover is comfortably below the exit threshold, and the taxpayer qualifies for 5% in the first five periods. Consider a remote-working consultant who invoices 50,000 euros, incurs 3,000-4,000 euros in actual costs and qualifies for 5%. The structure can be extremely efficient. But the advantage stems from the activity's economic characteristics, not simply the “flat-rate” label.

The ordinary regime deserves particular attention when an activity has high actual costs, major VAT-bearing investments, employees, expensive rent or other expenses well above the implicit allowance in the profitability coefficient. Significant personal IRPEF tax credits, predominantly business customers and an expectation of soon exceeding 85,000 euros may also change the assessment. It can also be inefficient to build an entire business around staying within the regime, refusing profitable new work solely to avoid exceeding the threshold. In such cases, the tax regime is beginning to distort economic decisions negatively.

Do not forget the accountant, software and other administrative costs

The flat-rate regime has simpler accounting than the ordinary regime, but this does not mean the activity has no administrative costs. There may still be costs for an accountant or tax service, invoicing software, certified email (PEC), a digital signature, Chamber of Commerce registration where required, annual chamber fees, a bank account, professional insurance and other activity-specific compliance obligations. None of these items should be confused with substitute tax. Self-employment must therefore be assessed as a small economic activity, not simply by looking at the F24 tax payment form.

Advance payments: the second-year cash-flow problem

Another often underestimated issue is the system of balancing and advance payments. The Italian Revenue Agency requires substitute tax to be paid through a balancing payment for the previous year and advance payments for the current year. This can create a distorted impression during the first year of activity, when tax outflows may seem relatively small. Later, you find yourself paying both the previous year's tax balance and advances for the current year at the same time. This does not mean paying the same tax twice: the advances will be credited in the following year's calculation. But the cash-flow impact can be substantial. That is why a self-employed person should regularly set aside part of their receipts for taxes and contributions, rather than treating the entire bank balance as available money.

This is probably the most useful way to put it. If a self-employed business invoices 50,000 euros, that amount still has to cover: actual operating costs + social security contributions + substitute tax + any other administrative and professional costs. The profitability coefficient determines income for tax purposes. It does not make actual costs disappear. If 11,000 euros in costs are implicitly recognised for tax purposes but actual costs are 15,000, the additional 4,000 euros remain a real economic outflow, even though they do not further reduce the flat-rate taxable base. The distinction between taxable income and actual economic earnings is therefore fundamental.

How to compare the flat-rate and ordinary regimes properly

A sound simulation should start from the same economic data and construct two scenarios. At a minimum, you need to know:

Only then can you calculate how much is actually left under the two alternatives. Comparing only the 15% substitute-tax rate with ordinary IRPEF rates almost inevitably produces a misleading result.

Conclusion

The flat-rate regime can be extremely advantageous, but not simply because it lets you “pay 15%”. Its appeal comes from a combination of factors: income determined through a coefficient rather than actual costs, a low substitute tax, VAT and administrative simplifications and, where available, a 5% rate for new activities. At the same time, frequently overlooked costs include INPS contributions, non-deductible input VAT, actual costs that cannot be individually deducted, reduced opportunities to use certain IRPEF tax credits, and the cash management of balancing and advance payments. The right question is therefore not: “Is the flat-rate regime worthwhile?” It is: “With my turnover, my coefficient, my actual costs, my social security position and the customers I serve, how much money do I actually keep under the flat-rate regime compared with the ordinary one?” Until these numbers are brought into the same calculation, discussing which is better means comparing rates, not tax regimes.

Note: the tax regime actually applicable depends on the activity and the taxpayer's personal circumstances. Examples are simplified for explanatory purposes and do not replace a tax and social security calculation for an individual case.