Selling a property is a significant financial milestone for many owners. Beyond determining the price and handling the purchase agreement, the tax component plays a decisive role in the economic success of the transaction. At the heart of the tax considerations is often the so-called speculation tax, which is legally defined as the taxation of private disposal transactions (private Veräußerungsgeschäfte) within the meaning of the German Income Tax Act (§ 23 EStG). The period between the acquisition and the sale of the property is generally the key factor in determining whether the gain must be taxed.
According to the current legal status as of August 26, 2026, the ten-year period under § 23 EStG is the central criterion for tax liability in real estate sales. Understanding this period and the statutory exemptions can help avoid costly mistakes and ensure legally sound planning for the disposal. In this article, we highlight the technical fundamentals of the speculation period, the requirements for tax exemptions, and the applicable exemption limits.
The Ten-Year Period under § 23 EStG: Fundamentals and Calculation
In principle, disposal transactions involving real estate are subject to income tax if the period between acquisition and sale does not exceed ten years [1]. This period is often simplified as the “speculation period” (Spekulationsfrist). The legislator’s objective is to tax short-term value increases achieved through property trading.
The decisive factor for calculating this period is not the date of moving in or the transfer of benefits and burdens, but rather the date of the notarial certification of the purchase agreements. The date of the signature on the purchase agreement is authoritative for both the acquisition and the sale. If less than ten years have elapsed between these two points in time, the capital gain is generally taxable [1]. It is therefore of essential importance to precisely check the dates of the respective notary agreements before initiating a sale. Even a single day missing from the full ten-year period can trigger tax liability.
Exemptions from Taxation: The Privilege of Self-Use
Despite the fundamental ten-year period, the law provides for important exemptions, particularly aimed at protecting owner-occupied housing. Taxation does not occur if the property was used exclusively for the owner’s own residential purposes (eigene Wohnzwecke) in the period between acquisition or completion and sale [1]. In this case, the holding period is irrelevant; a tax-free sale is possible even well before the ten-year period expires.
Furthermore, another practice-relevant exemption applies: the sale also remains tax-free if the building was used for the owner’s own residential purposes in the year of the sale and in the two preceding calendar years [1]. This rule is often referred to as the “two-and-a-half-year rule,” although it should be noted that three full calendar years are not required. A continuous period of self-use spanning three calendar years is sufficient (e.g., December of the year before last, the entire previous year, and January of the year of sale). It is important to note that the self-use during this period must not have been interrupted by rental.
The Exemption Limit for Private Disposal Transactions
For taxpayers who cannot comply with the ten-year period and do not meet any of the mentioned exemptions for self-use, there is a small relief in the form of an exemption limit (Freigrenze). Gains from private disposal transactions remain tax-free if the total gain achieved from all such transactions in the calendar year is less than 1,000 EUR [1].
However, it is urgent to note that this is an exemption limit and not a tax-free allowance (Freibetrag). As soon as the total gain reaches or exceeds the amount of 1,000 EUR, the entire gain becomes taxable from the very first euro. In the practice of real estate disposal, this limit will rarely play a role due to the usually high property values and the associated value increases, as capital gains are generally significantly above this amount.
Calculation of the Capital Gain and Tax Consequences
If the ten-year period is not met and no tax exemption applies, the capital gain must be determined. This results from the difference between the sale price on the one hand and the acquisition or production costs as well as the advertising expenses (Werbungskosten) on the other. Deductible costs include, among others, brokerage fees, notary costs for the purchase agreement, real estate transfer tax, as well as travel and advertising costs associated with the sale.
The gain determined in this way is subject to the taxpayer’s personal income tax rate. There is no flat-rate taxation for real estate sales, such as the final withholding tax (Abgeltungsteuer) for capital income. This means that for high gains and already high other income, the top tax rate may apply. Meticulous documentation of all costs associated with the property is therefore essential for an accurate determination of the gain.
Conclusion and Practical Advice
The ten-year period under § 23 EStG represents a significant hurdle in real estate sales, but it can be managed in a legally secure manner through forward-looking planning and the use of self-use exemptions. Owners should check before any sale whether the period between the notary appointments has already expired or whether sufficient self-use exists to avoid an unnecessary tax burden. Since the tax implications can be substantial and individual cases often raise complex detailed questions, it is recommended to seek expert advice early on to assess the individual situation in a legally secure manner.
