Renting an Apartment to Relatives at a Reduced Price – Tax Pitfalls

Renting an apartment to a family member often seems simple and safe—it’s all about trust and support for relatives. The problem is that the tax office views such arrangements very differently compared to “ordinary” rentals. Low rents, informal agreements, and the absence of market-compliant conditions can quickly lead to lost benefits, questioned expenses, and unpleasant correspondence with the tax authorities. It is important to know what to really watch out for when renting an apartment to family members.

Renting to Close Relatives and Monitoring by the Tax Office – when can the contract be questioned?

When renting an apartment to a family member, it is easy to assume that the contract is a “private matter” and that the tax office is not interested. In practice, it is exactly the opposite.  Family relationships automatically increase the attention of the tax authorities because tax authorities assume that the rental terms might deviate from the market standard. It is not just about the amount of rent, but also about the type of contract conclusion, its actual execution, and the compliance with other documents. When an apartment is rented to a close relative, the tax office checks whether the contract looks the way it would between strangers—without benefits, exceptions, and “family simplifications.”

Problems usually begin when the contract exists only on paper, the rent is irregular or not paid at all, and costs are accounted for as if the apartment were rented entirely at market rates. The tax authorities could then conclude that it is a pro forma use or partial free use, which opens up the possibility of questioning the accounts. In practice, this means the risk of a correction of tax returns, the removal of the right to deduct costs, and even the imposition of tax back-payments with interest. Therefore, when renting to close relatives, it is crucial that not only the contract text but also the actual conduct is consistent and predictable, just as an owner would do with an unrelated tenant.

Low Rent When Renting to Relatives – Tax Implications to Know

Setting the rent “at cost price” or a symbolic sum is one of the most common mistakes when renting within the family. From a tax perspective intentions do not matter—it is the numbers and their relation to market conditions that count. If the rent is significantly below the rates applicable in the respective region, the tax office can assume that part of the rental is free, even if payments are formally collected. This, in turn, has a direct impact on the ability to account for costs related to the apartment, such as depreciation, loan interest, or renovations.

In practice, the tax authorities rely on specific criteria regardless of the degree of kinship. With rents that are too low, the tax office may determine that there is no actual intention to generate income (if the rental conditions deviate significantly from the market standard), which automatically restricts the right to full deductions. Importantly, it is not enough to generally claim that “such prices are common in the area”. In the event of an audit, it is necessary to rely on specific data—e.g. from the local market, advertisements, or other reliable sources. If this justification is missing, the tax office imposes its own assessment of the situation, which rarely favors the taxpayer.

Income Tax When Renting to Relatives – Where is the Safety Margin?

The income tax for renting to relatives operates on the same principles as for renting to strangers, however, in practice, the margin for error is significantly smaller. Any inconsistency, simplification, or inconsistency can be interpreted as intentional behavior. The safety margin runs where the rent amount, the payment method, and the cost accounting form a coherent, logical unit. If income is declared, but at the same time high costs arise with very low rent, the tax office can question the economic sense of such renting.

It should be noted that income tax is not just the tax rate itself, but the entire structure of the calculation. The tax office assesses whether the rental is of a commercial nature or rather serves to privately support a family member. If the latter prevails, some tax benefits simply lapse. Therefore, the safe margin is not the formal minimum, but real conditions that are close to the market, even if they are not perfectly identical. The more transparent and predictable the accounts are, the lower the risk that the tax office will question the income tax when renting to relatives.

Renting to Relatives Below Market Rates and the Right to Costs and Tax Benefits – We Clarify

One of the biggest disappointments for apartment owners is the moment when it turns out that a rent that is too low automatically limits the right to account for costs. Here, the principle of “all or nothing” does not apply—frequently the tax authorities apply a proportional approach, acknowledging that only part of the expenses actually serve the purpose of income generation. This means that even actually incurred costs can be reduced if the rent does not meet certain criteria.

Situations where the taxpayer uses benefits or preferences while renting the apartment to a family member under conditions that deviate from the market standard are particularly problematic. The tax authorities then analyze very carefully whether the benefit was used contrary to its purpose. Consequently, not only can part of the costs be lost, but also the possibility of continuing to benefit from preferences in subsequent years. Therefore, when renting to relatives below market rates, a conscious risk management is crucial, rather than relying on a lenient attitude from the authorities due to the familial nature of the relationship.

How to Set Rent When Renting to Close Relatives to Avoid Losing Tax Benefits?

Setting rent when renting to close relatives requires a sober approach and detachment from emotions. The safest solution is to orientate on the actual market rates and then determine an amount that is within a reasonable range and can be logically justified. It is not about maximizing profit, but about maintaining coherence between income and costs, so that the accounting also appears credible from the tax office’s perspective.

It is also advisable to pay attention to the formal side of the rent, as this is usually decisive in evaluating the entire situation. A clear contract, regular payments, the actual implementation of agreements, and consistency in accounting are elements that actually protect against the questioning of tax benefits. When renting to a close one is taken as seriously as renting to a third party, the tax office has significantly fewer arguments for intervention. In practice, this means calm, predictability, and no unpleasant surprises during an audit.

Renting an apartment to close relatives can be a convenient solution, but only if there is awareness of the tax consequences from the start and action is taken in an orderly way. A market-based approach to setting the rent, a correct contract, and consistent accounting of income and costs avoid disputes with the tax office and protect against the loss of benefits. In practice, most problems do not arise because someone intentionally does something wrong, but because the applicable regulations are unknown or trivialized.

If there is certainty that everything has been accounted for correctly, a good solution is the online tax return with the help of specialists. With Taxando, the entire process can be completed online, stress-free, and without the risk of costly mistakes. This is a convenient option if value is placed on tax security and peace of mind—even in more sensitive situations such as renting an apartment to the family.