Developers Say Thailand’s 2027 Land Revaluation Will Raise Taxes by Up to 20%

Developers' case: timing, data and policy asks

Developers are not rejecting the need to update appraisals indefinitely. Their argument is about timing and mitigating measures.

Their main points:

• Market fragility: low purchasing power, tighter lending standards and excess unsold stock mean demand is fragile. The private sector estimates unsold housing exceeds 1.3 trillion baht, and with land banks the total value of unsold assets reaches around 2 trillion baht.
• Expected appraisal increase: the sector expects official values will rise by about 10%–20% across the country, which translates into an immediate increase in tax liability on transactions and holdings.
• Policy inconsistency: developers highlight that business groups previously proposed a 50% cut in the land and buildings tax to help after a slowdown, yet the administration is moving to raise the appraisal baseline.

Their requests to policymakers include:

• Delay the 2027 revaluation until the broader economy and the property market strengthen.
• If the revaluation proceeds on schedule, introduce relief measures such as temporary tax rate reductions, extended transfer fee waivers, or phased implementation of new values.

I agree with the developers in one respect: valuation updates are technical acts that become political when they affect cashflows at scale. Governments need to weigh near-term macro impact against medium-term revenue goals.

Broader economic effects beyond housing

This is not just a property story. Because land is a core asset across several sectors, the revaluation touches wider cost structures.

Sectors at risk:

• Hospitality: hotels and resorts use land value in tax calculations; higher appraisals increase operating overhead.
• Retail: landlords face larger recurrent obligations, which can translate into higher rents over time.
• Industry and logistics: factories and distribution centres that own land will see higher property taxes.
• Agriculture: while many rural parcels are taxed differently, commercial farms and agribusinesses with registered land holdings may face higher assessed liabilities.

Higher operating costs in these sectors can affect prices, wage decisions and investment plans. For a government trying to balance revenue needs with an economic recovery, the timing of a valuation increase has trade-offs.

Policy options and what officials could consider

If I had to brief a policymaker, these are pragmatic options to manage the trade-off between fairer valuations and avoiding a cost shock:

• Phased implementation: apply the new appraisal values gradually over multiple years to soften the immediate jump in tax bills.
• Targeted relief: extend or introduce exemptions and reduced rates for first-time homebuyers, low-income households, and developers clearing unsold stock.
• Temporary moratorium on enforcement for transfers initiated within a set window to give buyers time to adjust financing.
• Indexed thresholds: keep the tax bands tied to income measures so that tax liability does not outpace household earning trends.

The private sector is urging either a delay until market conditions improve, or adoption of at least some of the measures above if the revaluation goes ahead as planned.

Practical advice for buyers, owners and investors

For anyone holding or considering property in Thailand, here are steps to reduce exposure to the immediate risk:

• For buyers completing transactions before 30 June, check whether existing fee relief measures apply and whether they will expire on 30 June as indicated in sector discussions. If reliefs are about to lapse, prioritize timing or negotiate seller concessions such as contribution to transfer fees.
• For second-home or buy-to-let investors, run a tax-sensitivity analysis assuming an increase of 10%–20% in official values; compute how much your annual land and buildings tax and potential transfer costs would rise.
• For developers and institutional owners, stress-test balance sheets for higher recurring tax costs and plan for longer holding periods on unsold units or land parcels.
• For lenders and mortgage holders, evaluate the impact on loan-to-value thresholds and borrower affordability if annual costs rise.

Some tactical moves:

• Negotiate “free transfer” or other seller concessions into the purchase contract to offset rising transfer fees.
• Lock in offers or complete transfers before the valuation takes effect if timing and paperwork permit.
• For foreign buyers, consult local tax counsel: classification of taxable value and how transfer fees are calculated can differ depending on the deal structure.

These actions do not eliminate the risk, but they help manage cashflow and timing while the policy picture remains uncertain.

Market outlook and risks

The revaluation is intended to align official values with market prices, which over the medium term makes tax administration more accurate and can widen the tax base. The problem now is that the market is recovering unevenly. The risk is a near-term shock that causes transaction volumes to fall and pushes unsold inventory higher.

Key risks for the market:

• A sudden jump in transfer and holding costs could cause buyers to postpone transfers and developers to delay launches.
• Developers with leveraged land banks may see higher carrying costs and weaker liquidity.
• Sectors reliant on land as an operating asset will face higher overheads, which could translate into slower investment and employment decisions.

I do not think this is a systemic crisis in itself, but it is a material headwind for a market that is not yet fully recovered. If the government pairs the revaluation with mitigating measures, the adjustment is more manageable; absent those measures the near-term hit could deepen the slowdown.

Conclusion: what this means in plain terms

The 2027 appraisal change is a technical reform with tangible financial consequences. If official values rise by 10%–20% as developers expect, then taxes and transfer fees that use those values as a base will become more costly from 1 January 2027. Buyers, second-home owners, developers and land-heavy businesses are the most exposed.

We are watching whether policymakers will delay the revaluation or adopt relief measures to soften the impact. For market participants the prudent course is to model a 10%–20% rise in assessed values when planning purchases, transfers and holding costs and to seek contractual protections where possible.

The specific practical fact to carry away: the revaluation is scheduled for 1 January 2027, and the private sector projects an average increase in official land values of about 10%–20%, which will raise tax and transfer costs even if statutory rates do not change.

Frequently Asked Questions

Q: When will the new land appraisal values take effect?

A: The new official appraisal cycle is due to start on 1 January 2027 and will run through 2030.

Q: How much are official appraisal values expected to rise?

A: Developers and sector representatives estimate a nationwide average increase of about 10%–20% in official land appraisal values.

Q: Will tax rates change as part of this revaluation?

A: The revaluation adjusts the base value used to calculate taxes. Tax rates are separate and do not have to change for taxpayers to pay more; higher assessed values increase the tax base and therefore the amounts payable even if rates remain the same.

Q: What can buyers or developers do to protect themselves?

A: Practical steps include completing transfers before the new values take effect if possible, negotiating seller concessions such as “free transfer” terms, running sensitivity analyses assuming a 10%–20% rise in assessed values, and discussing timing and tax implications with local legal and tax advisers.