시가 26억 이하는 부부 공동명의가 유리…장기 거주땐 단독명의

The joint ownership rule is being examined due to the upcoming tax reform. For homeowners with a single property, if the property price is at or below 26 billion won (with an initial market price of 18 billion won), joint ownership is beneficial. However, for high-value properties above 26 billion won, a single owner may benefit from long-term residency.

According to the 2026 tax reform proposal, if a joint owner does not claim the special allowance for a first-time homeowner in Seoul or other designated areas starting in 2028, they will face the same 80% market value tax rate as non-joint owners. Joint owners, on the other hand, would face a 70% rate. Considering that single homeowners currently pay 60% of the market value tax rate, joint ownership could be seen as a disadvantage.

The tax on joint ownership is calculated based on the market value after deducting the basic deduction and the market value proportion. However, joint owners may not necessarily face higher tax burdens. Joint ownership means the combined basic deduction (9 billion won × 2 people = 18 billion won) is 4 billion won higher than that of a single homeowner.

Additionally, when a single homeowner chooses to take the single homeowner special allowance, they can benefit from the market value proportion tax (70%) and age/tenure-based deductions. The basis for choosing between joint ownership and the single homeowner special allowance is the initial market price of 18 billion won. If a joint owner owns a property valued at 18 billion won or less, they can deduct up to 18 billion won.

However, if a single homeowner takes full advantage of the age and tenancy deductions, they can receive up to 80% of the tax deduction in the 28 billion-46 billion won range. For example, if a property is valued at 35 billion won, a single homeowner would pay 333,000 won in tax without deductions, while joint owners would pay 98,000 won. But if the single homeowner can maximize the tax deduction to 80%, they could pay as little as 67,000 won in tax.