Last Updated: September 20, 2026
This comprehensive guide explains exactly how Thai manufacturers, factory owners, and procurement managers can claim the 150% tax deduction for energy-efficient machinery under Royal Decree No. 805 (B.E. 2569). Whether you’re upgrading aging air compressors, investing in new production equipment, or planning a facility-wide energy efficiency overhaul, this post covers the technical requirements, step-by-step claim process, documentation needed, and critical deadlines you must meet to maximize your tax savings between 2026 and 2028.
To claim the 150% tax deduction on energy-efficient machinery in Thailand, manufacturers must invest in equipment certified with a Level 5-star energy efficiency label by the Department of Alternative Energy Development and Energy Conservation (DEDE). Under Royal Decree No. 805 (effective March 2, 2026), businesses can deduct 100% of the equipment cost through standard depreciation plus an additional 50% bonus deduction, totaling 150%. This incentive applies to new machinery purchased and operational between March 3, 2026, and December 31, 2028.
At AirSpace Machinery Co., Ltd., we leverage over 20 years of engineering excellence and our ISO 9001-certified 4000m² facility to provide the high-efficiency Permanent Magnet Variable Frequency (PMV) Screw Air Compressors required to meet these stringent 2026 standards.
Why Is Royal Decree No. 805 a Game-Changer for Thai Industrial Manufacturers?
Royal Decree No. 805 (B.E. 2569) is designed to accelerate Thailand’s transition to a low-carbon industrial economy. For factory owners, this isn’t just about sustainability: it’s a massive financial instrument. By allowing a 150% deduction, the Thai government is effectively subsidizing a significant portion of the capital expenditure (CAPEX) for upgrading aging, inefficient air systems.
The Financial Impact: A Side-by-Side Tax Savings Comparison
If your facility invests in a high-efficiency 75hp 55kw Variable Frequency Screw Air Compressor, the tax benefit significantly offsets the purchase price.
| Investment Feature | Standard Deduction (Pre-2026) | Royal Decree No. 805 (2026-2028) |
|---|---|---|
| Total Deductible % | 100% | 150% |
| Example Investment | THB 1,000,000 | THB 1,000,000 |
| Total Tax Deduction | THB 1,000,000 | THB 1,500,000 |
| Tax Savings (at 20% CIT) | THB 200,000 | THB 300,000 |
By choosing a PMV Screw Air Compressor, you are not only capturing that extra THB 100,000 in tax savings but also reducing monthly electricity bills by up to 35% compared to fixed-speed models.
According to the International Energy Agency (IEA), compressed air systems account for approximately 10% of total industrial electricity consumption globally, making energy-efficient compressor upgrades one of the highest-impact investments manufacturers can make for both operational savings and carbon reduction targets.
What Are the Technical Requirements for DEDE 5-Star Energy Efficiency Certification?
The Level 5-star energy efficiency label is the “gold standard” required by the Thai Revenue Department for tax eligibility. To qualify, the equipment must undergo rigorous testing by DEDE or the Electricity Generating Authority of Thailand (EGAT).
For air compressors, this typically involves:
- Specific Power Requirements: The amount of energy (kW) required to produce a specific volume of air (m³/min).
- Part-Load Efficiency: How well the machine performs when demand drops. This is where Permanent Magnet Variable Frequency (PMV) technology excels, as it maintains high efficiency even at 20-30% capacity.
- ISO 1217 Compliance: Verification of flow rate and power consumption under standardized conditions.
Addressing Thailand’s Specific Tropical Climate Challenges for Compressor Performance
When selecting a compressor for the Thai market, efficiency ratings aren’t the only factor. Thailand’s high humidity and ambient temperatures (often exceeding 40°C in industrial zones like Rayong or Chonburi) can degrade the efficiency of standard units.
AirSpace Machinery’s PMV75 Series is engineered for these “Extreme Climate” conditions. Our oversized cooling systems ensure that the compressor maintains its DEDE 5-star efficiency levels even during peak tropical heat, preventing the “thermal derating” that often plagues cheaper imports.
Step-by-Step Guide: How to Successfully Process Your 150% Tax Deduction Claim
To ensure your claim is not rejected by the Revenue Department, follow this precise compliance sequence:
1. Verify the Seller’s VAT Registration Status
The machinery must be purchased from a VAT-registered operator. AirSpace Machinery provides all necessary export and tax documentation, ensuring our Thai partners can issue the required e-Tax Invoices.
2. Procure Brand New Machinery Only
The incentive strictly excludes “used” or “refurbished” machinery. It must be brand new. For those in precision manufacturing, such as electronics or food processing, we recommend our Oil-Free Scroll Compressors which meet both energy standards and purity requirements (ISO 8573-1 Class 0).
3. Obtain the Official e-Tax Invoice
Manual paper invoices are increasingly scrutinized. Ensure your procurement process generates a valid e-Tax Invoice as per the latest Thai Revenue Department guidelines for 2026.
4. Meet the Critical Operational Deadline
The equipment must be installed, tested, and operational by December 31, 2028. If you are planning a large-scale facility upgrade involving multiple 180hp 132kw Fixed Speed Efficient Screw Air Compressors, factor in the lead time for logistics and customs clearance to ensure you don’t miss this window.
Common Questions from Thai Procurement Managers (Q&A)
Can I claim the deduction for a laser-cutting integrated compressor system?
Yes. If you are using an All-in-One Laser Cutting 20hp 15kw Screw Air Compressor, it qualifies as industrial machinery. As long as the integrated unit meets the DEDE energy efficiency criteria, the entire “all-in-one” system (compressor, dryer, and tank) can be considered for the deduction.
Is the 150% deduction applied all at once or spread over time?
The 100% cost is depreciated over the machine’s useful life (typically 5 years in Thailand), while the 50% “bonus” is usually claimed in the year the asset is acquired and ready for use. Always consult with a local Thai tax auditor to confirm the specific filing period for your corporate structure.
Does AirSpace provide CE and ISO 9001 documentation for Thai customs clearance?
Absolutely. Every unit we ship, from our 10hp Variable Frequency models to our largest industrial units, comes with full CE and ISO 9001:2015 certification. This ensures smooth clearance at Laem Chabang port and provides the technical foundation for your DEDE certification application.
Technical Spotlight: PMV vs. Fixed Speed Compressors in the 2026 Tax Incentive Context
Under Royal Decree No. 805, the goal is “Energy Saving.” A Fixed Speed Screw Air Compressor is reliable but often fails to reach the “5-star” efficiency rating required for the tax bonus because it wastes energy during “unloaded” states.
In contrast, our Permanent Magnet Variable Frequency (PMV) units use an IE4 or IE5 equivalent motor that adjusts its speed to match your factory’s air demand.
Key Benefits of PMV for Tax Compliance:
- Zero Inrush Current: Prevents peak demand charges from Thai provincial electricity authorities (PEA).
- Constant Pressure: Maintains a stable 8-bar or 10-bar supply, reducing artificial demand.
- Wider Frequency Range: Stays efficient even at low speeds, which is a critical metric for DEDE Level 5 labels.
Conclusion: Act Before the December 2028 Deadline Closes
The window for the 150% tax deduction is open now but will close on December 31, 2028. For manufacturers in Thailand looking to hedge against rising electricity tariffs and tighten environmental regulations, the time to upgrade is now.
By selecting AirSpace Machinery, you are choosing a partner with 20 years of engineering pedigree and a 4000m² facility dedicated to high-performance air solutions. We don’t just sell machines; we provide the technical documentation and efficiency performance required to make your tax claim a success.
Get a Customized Proposal for Your Facility
Ready to upgrade your facility and claim your 150% tax deduction? Provide your requirements below for a technical consultation.
- Required Pressure: [___] bar/psi (Mandatory)
- Required Flow Rate: [___] m³/min or CFM (Mandatory)
- Application: [Industrial Manufacturing / Laser Cutting / Food & Beverage]
- Location: [Thailand / Southeast Asia / Other]
Note: Lead times vary based on configuration and custom cooling requirements for extreme climates.
Author: Penny Winston
Technical Writer, AirSpace Machinery Co., Ltd.
Reviewed by Engineering
Compliance Verified: Royal Decree No. 805 (Thailand), ISO 9001:2015, CE Standards.
Sources & Standards:
- Thailand Revenue Department: Royal Decree No. 805 (B.E. 2569).
- DEDE (Department of Alternative Energy Development and Energy Conservation): Energy Efficiency Labeling Standards 2026.
- ISO 8573-1:2010: Compressed air contaminants and purity classes.
- ISO 1217:2009: Displacement compressors : Acceptance tests.
Frequently Asked Questions About Thailand’s 150% Energy Efficiency Tax Deduction
What types of machinery qualify for the 150% tax deduction under Royal Decree No. 805?
Machinery that qualifies includes industrial equipment certified with a DEDE Level 5-star energy efficiency label, such as air compressors, motors, chillers, and other energy-consuming production equipment. The machinery must be brand new, purchased from a VAT-registered seller, and meet the specific energy performance thresholds established by the Department of Alternative Energy Development and Energy Conservation (DEDE). Variable frequency drive equipment, including PMV screw air compressors, typically meets these stringent requirements.
How long do I have to claim the 150% tax deduction for energy-efficient equipment in Thailand?
The incentive window under Royal Decree No. 805 runs from March 3, 2026, through December 31, 2028. Your equipment must be purchased, installed, and fully operational before this deadline expires. Given the lead times for international shipping, customs clearance at Laem Chabang port, and professional installation, manufacturers should begin their procurement process well in advance—ideally 6-12 months before the deadline for large-scale projects.
Can foreign-manufactured compressors qualify for Thailand’s energy efficiency tax incentive?
Yes, foreign-manufactured equipment can qualify as long as it meets the DEDE 5-star energy efficiency certification requirements and is imported through proper channels with valid documentation. AirSpace Machinery provides full CE and ISO 9001:2015 certification with every unit, which facilitates both Thai customs clearance and the subsequent DEDE certification application process. The country of manufacture is less important than verified energy performance.
What documentation do I need to successfully claim the 150% tax deduction?
You will need a valid e-Tax Invoice from a VAT-registered seller, the DEDE Level 5-star energy efficiency certification for your equipment, proof of installation and operational status, and standard corporate tax filing documents. Additionally, maintaining ISO 1217 test reports, CE certifications, and manufacturer specifications will support your claim if audited by the Thai Revenue Department. AirSpace Machinery provides comprehensive documentation packages specifically designed for Royal Decree No. 805 compliance.
How does the 150% deduction actually reduce my corporate tax liability?
The 150% deduction works by allowing you to deduct 100% of the equipment cost through standard depreciation over the asset’s useful life (typically 5 years), plus an additional 50% bonus deduction typically claimed in the year the asset becomes operational. For a THB 1,000,000 investment at Thailand’s 20% corporate income tax rate, this translates to THB 300,000 in total tax savings—THB 100,000 more than the standard deduction would provide. This effectively means the government subsidizes a significant portion of your energy efficiency upgrade.
Why do PMV compressors have a higher chance of achieving DEDE 5-star certification than fixed-speed models?
Permanent Magnet Variable Frequency (PMV) compressors achieve higher DEDE ratings because they automatically adjust motor speed to match actual air demand, maintaining efficiency across varying load conditions. Fixed-speed compressors waste significant energy during unloaded states and partial-load operation, which DEDE’s testing methodology specifically penalizes. PMV technology also eliminates high inrush currents during startup and maintains consistent pressure output, both of which contribute to superior specific power ratings (kW per m³/min) that determine the star rating.
What happens if my equipment is installed but not operational before December 31, 2028?
If your equipment is not fully operational by the December 31, 2028 deadline, you will not qualify for the 50% bonus deduction under Royal Decree No. 805, though you may still claim the standard 100% depreciation. “Operational” typically means the equipment has been installed, commissioned, tested, and is actively being used in your manufacturing process. To avoid missing this critical deadline, factor in realistic timelines for shipping, customs clearance, installation, and commissioning—especially for complex multi-unit systems or facilities requiring infrastructure modifications.
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