Korea Comprehensive Real Estate Tax 2026 — Single vs Multi-Home Calculations and Saving Strategies

Key Summary

• Korea's Comprehensive Real Estate Tax (jongbuse) is a national property tax assessed when the total publicly assessed value of your real estate exceeds a statutory threshold as of June 1 each year.
• In 2026, single-home owners receive a basic deduction of KRW 1.2 billion; multi-home owners receive KRW 900 million. General rates run 0.5%–2.7%, while multi-home surcharge rates run 0.5%–5.0%.
• The filing and payment window runs December 1 to December 15. Tax bills over KRW 2.5 million can be split into installments over six months.
• Spouse co-ownership, registered long-term rental exclusion, and the temporary two-home exception can save KRW 1,000,000 or more annually.

What Is the Comprehensive Real Estate Tax — and How Does It Differ from Property Tax?

The Comprehensive Real Estate Tax (CRET) is a national tax levied on individuals whose total real estate holdings exceed a statutory value. It is assessed separately from the local property tax, with the holdings snapshot taken every June 1.

• Local property tax: Assessed on every property owner, paid in two installments (July and September).
• Comprehensive Real Estate Tax: National tax, assessed only when total holdings exceed thresholds, filed and paid once in December.

Introduced in 2005 to address wealth redistribution and curb speculation, the CRET fluctuates each year based on the publicly assessed value ratio. The 2026 nationwide ratio averages around 69%, with the government holding the realization ratio steady.

When Does a Single-Home Owner Start Paying CRET?

Single-home owners trigger CRET when their property's publicly assessed value exceeds KRW 1.2 billion. For a single home valued at KRW 1.4 billion held in one name, the taxable base starts after deducting KRW 1.2 billion — leaving KRW 200 million.

Step-by-Step Single-Home Calculation

1. 1Publicly assessed value KRW 1.4 billion – basic deduction KRW 1.2 billion = KRW 200 million
2. 2Apply 60% fair market value ratio → taxable base KRW 120 million
3. 3Apply 0.5% rate (for the up-to-KRW-300-million bracket) → about KRW 600,000
4. 4Subtract overlapping property tax → final CRET amount

Long-term holding deductions (5 yrs 20%, 10 yrs 40%, 15 yrs 50%) and senior deductions (age 60/65/70 = 20/30/40%) can stack, but the combined cap is 80%.

How Much Heavier Is CRET for Multi-Home Owners?

Multi-home owners trigger CRET when combined holdings exceed KRW 900 million. Owners of three or more homes — or two homes including one in a regulated zone — face surcharge rates of 0.5%–5.0%.

Regulated zones are designated annually by the Ministry of Land. In 2026, regulated zones cover only parts of Seoul's Gangnam-4 districts and Yongsan-gu. Most other metropolitan areas have been deregulated.

Is Spouse Co-Ownership Actually a Tax Saver?

When a single home is held jointly by spouses, each spouse is treated as a single-home owner, giving them KRW 1.2 billion in deductions each — KRW 2.4 billion combined. A KRW 2 billion apartment held by one spouse alone would expose KRW 800 million; under joint ownership, the taxable amount can fall to zero.

However, the capital gains tax exemption (the 1-household-1-home rule) requires both spouses to meet the two-year residency requirement individually if you want both halves of the gain to qualify.

How to Register Rentals for the Exclusion (Hapsanbaeje)

Properties registered as long-term private rental housing are excluded from the CRET aggregation. Eligibility as of 2026:

• Apartments cannot be newly registered (banned since the July 10, 2020 policy)
• Non-apartments (villas, multi-family, officetels) can register for the 10-year long-term plan
• Publicly assessed value caps: KRW 600M (metro) or KRW 300M (non-metro)

Applications must be filed between September 16 and 30 each year via Hometax or your local tax office. Early sale before the 10-year minimum triggers penalty fines, so register only if you are sure about long-term holding.

Temporary Two-Home Exception — Keeping Single-Home Benefits

If you buy a new home but sell your previous home within three years, you keep the single-home benefits (KRW 1.2B deduction, general rates). Core conditions:

• Buy the new home only after holding the previous home for at least one year
• Sell the previous home within three years of buying the new one
• Failing either rule reclassifies you as a multi-home owner with retroactive penalty

Inside regulated zones the rule tightens to a one-year sale deadline. Anyone planning to switch homes should mark the deadline on a calendar from the day of purchase.

Filing, Payment, and Installment Plans

• Assessment date: June 1 each year
• Filing and payment window: December 1–15 each year
• Installments: bills over KRW 2.5 million can be split, with up to 50% deferred for six months
• Payment channels: Hometax, Witax, bank counters, credit card (1.0% fee)

Hometax provides a CRET simulator so you can estimate your liability before the bill arrives. Look up your property's exact assessed value at the Ministry of Land's Publicly Assessed Real Estate Value portal (realtyprice.kr).

Is CRET Going Away? Outlook for 2026

Since 2024, the government has raised the single-home deduction (KRW 1.1B → KRW 1.2B), softened multi-home surcharges in phases, and broadened rental exclusions. As of 2026 the CRET remains in force and multi-home surcharges still exist, but the dramatic shrinking of regulated zones cut real-world burdens by roughly 30% compared to 2022.

Policy volatility remains high. Review your portfolio every May (before the June 1 snapshot), revisit your title structure, and reconsider rental registration each year.

Five-Step Practical Tax-Saving Guide

1. 1Confirm assessed values: Pull every owned property from realtyprice.kr
2. 2Audit title structure: If a single home is held in one name, simulate switching to joint ownership (factoring in acquisition tax)
3. 3Evaluate rental registration: Check 10-year long-term registration if you own non-apartments
4. 4Use the two-home exception wisely: Mark the three-year sale deadline when switching homes
5. 5Use installment payments: If your bill exceeds KRW 2.5M, split it to manage cash flow

💡 Insight from the field: Spouse co-ownership almost always wins for CRET but tightens the capital gains exemption rules. Run both simulations — if you plan to sell within a few years, single-name ownership may actually win on a lifetime-tax basis.

Frequently Asked Questions (FAQ)

Q1. Are the Comprehensive Real Estate Tax and the local property tax the same?

A. No. Property tax is a local tax everyone pays. CRET is a national tax that kicks in only above the threshold.

Q2. What happens if I don't file the CRET return?

A. The tax office will assess you anyway. But exclusions and deductions only apply when you file — so voluntary filing often wins.

Q3. Does every single-home owner pay CRET?

A. No. Only when the assessed value exceeds KRW 1.2 billion. Below that the tax is zero.

Q4. Is spouse co-ownership always better?

A. Usually yes for one home, but multi-home portfolios sometimes benefit from single ownership. Run the full simulation including capital gains.

Q5. Are pre-construction sales contracts (bunyangkwon) included?

A. The contracts themselves are not. Once the balance is paid and title transfers, the property counts.

Q6. Does CRET installment payment carry interest?

A. The installment plan itself has no interest. But late payment triggers a 3% surcharge plus a daily 0.022% delay penalty.

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