Tax optimisation: what you need to know to pay less tax legally
“Paying less tax” is a legitimate and achievable goal — provided you do it through legal tools, not through evasion or avoidance. Tax optimisation is the discipline that allows you to minimise your tax burden while fully complying with the law.
Tax optimisation vs. tax evasion: the fundamental distinction
It is essential to clarify the difference:
- Tax optimisation (legal): the conscious use of deductions, credits and allowances provided by law to reduce the tax due
- Tax avoidance: the improper use of legal instruments to circumvent the intent of the legislature — technically legal but subject to challenge
- Tax evasion (illegal): concealment of income or falsification of documents — a criminal offence
We deal exclusively with legal tax optimisation. The boundaries are clear and our work always stays firmly within them.
The main tools of tax optimisation
For professionals and the self-employed
1. Income tax (IRPEF) deductions Costs actually incurred and documented for the exercise of the profession are fully deductible:
- Office rent or the professional use portion of a home (up to 50%)
- Purchase of professional equipment and tools
- Training and professional development expenses
- Business vehicle (deductible portion between 20% and 80% depending on use)
- Mobile and landline phones (80% for exclusive professional use)
- Expenses for collaborators and employees
2. Social security contributions Contributions paid to the Professional Fund or to INPS are fully deductible from taxable income for IRPEF purposes. A professional paying €8,000 per year in contributions reduces their taxable income by €8,000 — the actual saving depends on their marginal tax rate.
3. Flat-rate regime For those with revenue up to €85,000, the flat-rate regime offers:
- Taxation at 15% (or 5% for the first 5 years of activity)
- No VAT to pay
- No withholding tax applied by clients
- Simplified bookkeeping
The saving compared to the standard regime can be significant: a professional with €60,000 in revenue pays around €9,000 in income tax under the flat-rate scheme versus €18,000–22,000 under the standard regime (assuming similar non-deductible costs).
For companies
1. Depreciation planning Capital assets are deducted through tax depreciation. Planning the purchase of depreciable assets with the right timing (e.g. buying at year-end) allows deductions to be brought forward.
2. Tax credits Italy offers numerous tax credits that are often underutilised:
- R&D and Innovation credit: up to 20% of research and development expenditure
- Industry 4.0 Training credit: up to 70% of training costs on digital technologies
- Transition 5.0 credit: for investments in energy efficiency and digital transformation
- Southern Italy credit: for investments in southern Italian regions
3. Choosing the optimal company structure Srl vs. sole trader vs. partnership has significant tax implications. Prior analysis can generate substantial savings over the long term.
Tax optimisation for employees
Many employees are unaware of the tax-saving opportunities available to them. The annual tax return is not just a bureaucratic obligation: it is a tool for recovering taxes already paid.
Main deductions for employed workers:
- Employment income up to €15,000: base deduction of €1,955
- Dependants: spouse, children and other family members with income below €2,840.51
- Documented work-related expenses: continuing education fees, public transport passes
Allowances frequently unclaimed:
- Building bonuses (renovation, eco-bonus) — recoverable even for previous years
- School and university expenses for children
- Life and non-professional accident insurance
- Primary residence mortgage: deductible interest at 19%
An experienced accountant can identify unused deductions from previous years and, where possible, file amended returns to recover overpaid tax.
Supplementary pension schemes: the double tax benefit
Supplementary pension funds are one of the most effective and underused tax optimisation tools in Italy. They offer a double benefit:
1. Immediate deduction of contributions paid Contributions to a pension fund are deductible from total income up to €5,300.00 per year. A worker with a taxable income of €40,000 and a marginal rate of 38% saves up to €1,962 in income tax by contributing the maximum.
2. Reduced taxation at the point of payment The accumulated capital is taxed at withdrawal at a reduced rate of 15%, further reduced to 9% for each year of participation beyond the twentieth. Compared to standard income tax rates (23%–43%), the savings over decades of accumulation are substantial.
For the self-employed, contributions to a pension fund add to INPS/professional fund deductions, amplifying the tax benefit further.
Tax optimisation for property and personal assets
For private individuals, the main tax-saving opportunities include:
- Primary residence mortgage interest deduction: 19% on interest up to €4,000/year
- Medical expenses: 19% deduction on the amount exceeding €129.11
- Property renovation: 50% deduction on expenses up to €96,000
- Eco-bonus: deductions for energy efficiency improvements (from 50% to 65% depending on the type of work)
Rental property: owners who rent out property can opt for flat-rate tax on rental income (cedolare secca — 21%, or 10% for agreed-rent contracts) instead of standard income tax treatment. The convenience depends on the total income and marginal rate.
Tax timing: when decisions matter
One of the most underestimated variables in tax optimisation is timing. Advancing or deferring costs and revenues by just a few days can make a significant difference.
Capital asset purchases: buying in December rather than January allows the depreciation charge to be deducted in the current tax year, bringing the tax benefit forward by 12 months.
Invoicing: a professional in the standard regime may consider deferring invoice issuance at year-end depending on projected total income and applicable marginal rates.
Pension fund contributions: maximising contributions before 31 December secures the deduction in the current tax year.
IRPEF/IRAP advance payments: paying the right amount avoids both penalties and unnecessary immobilisation of cash. Accurate estimation of advance payments is an integral part of planning.
Tax planning throughout the year
The most common mistake is thinking about taxation only at return time. Effective planning happens throughout the year:
- January: plan the year’s investments — capital asset purchases, supplementary pension contributions, training budget
- March–April: review of the previous year’s final figures — identify unused deductions and assess whether amended returns could recover overpaid tax
- June–July: review of advance payments due
- September–October: analysis of interim results — if income is lower than projected, the November second advance payment can be reduced
- November–December: strategic purchases before the financial year closes — maximise current-year deductible costs
Tax optimisation is not only about the future. If in previous years you missed deductions or credits, there are mechanisms to recover overpaid tax.
Amended return in your favour: you can file an amended tax return within 5 years of the standard deadline to correct errors in your favour (e.g. deductions not included). Overpaid income tax is refunded with interest.
Voluntary regularisation (ravvedimento operoso): if errors were made in favour of the tax authority (e.g. undeclared income), voluntary regularisation allows you to correct your position spontaneously with reduced penalties compared to those applicable if discovered during an audit.
In both cases, it is essential to act before the tax authority initiates a review.
Studio CITI snc: tax optimisation advisory in Milan
We offer personalised analysis of your tax situation to identify all applicable legal saving opportunities. Our team guides you through annual tax planning, guaranteeing maximum savings in full compliance with the regulations.
After more than 40 years in Milan, we have an in-depth understanding of the local business environment and the regulations applicable to every type of client: professionals, SMEs, private individuals with property assets, companies with employees.
Tel. 02.450 774 39 — Contact us
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