TCS on Solar

What Is TCS on Solar?

TCS on solar refers to Tax Collected at Source under Section 206C(1H) of India’s Income Tax Act, as it applies to purchases of solar equipment and related goods. Under this mechanism, the seller of specified goods collects a percentage of the sale value from the buyer as tax, deposits it with the government, and the buyer later claims credit for that amount when filing their annual income tax return.

The TCS mechanism serves two purposes for the government. First, it improves tax collection efficiency by capturing tax revenue at the transaction stage rather than waiting for year-end filing. Second, it creates a data trail of large commercial transactions, helping tax authorities monitor economic activity and identify potential tax gaps.

For solar projects, TCS becomes relevant when equipment purchases exceed Rs 50 lakh in a financial year from a single seller. Solar modules, inverters, mounting structures, cables, and other balance of system components all qualify as goods under this provision. The standard TCS rate is 0.1% for buyers who provide their PAN. Non-PAN buyers face higher rates of 0.5% or 1%.

Understanding TCS is essential for commercial and industrial solar buyers, EPC contractors, and project developers. While TCS does not increase the total tax burden for most corporate buyers, it affects cash flow timing and requires compliance procedures that add administrative overhead to large solar procurements.

Why TCS on Solar Matters

TCS on solar matters for three reasons: cash flow impact, compliance burden, and project economics accuracy.

Cash flow timing: TCS is paid upfront at the time of purchase but recovered only when filing the annual income tax return. For a 1 MW commercial solar project with Rs 3 crore in module purchases from one vendor, the TCS amounts to Rs 2.95 lakh (0.1% of Rs 2.95 crore excess). This cash is tied up for 6 to 18 months depending on the purchase timing within the financial year.

Compliance requirements: Both sellers and buyers must maintain detailed records. Sellers track cumulative sales per buyer, issue TCS certificates, file quarterly returns, and deposit tax on time. Buyers collect certificates, reconcile with Form 26AS, and claim credit in their returns. Missing any step causes processing delays and potential disputes.

Financial model accuracy: Project developers must include TCS in working capital calculations. Ignoring TCS understates the initial cash outflow by Rs 50,000 to Rs 5 lakh for large projects, depending on vendor concentration and equipment values.

Vendor negotiation leverage: Buyers who understand TCS can negotiate with sellers on certificate issuance timelines and pricing transparency. Some EPC contractors absorb TCS into their quoted price; others pass it through as a separate line item.

PAN documentation: Ensuring PAN is provided to all sellers avoids the punitive 0.5% to 1% non-PAN rate. For large purchases, the difference between 0.1% and 1% is significant.

How TCS on Solar Works

The TCS process for solar equipment follows a clear sequence from purchase to credit claim.

Step 1, Threshold monitoring: The seller tracks cumulative sales to each buyer throughout the financial year. Solar module manufacturers, inverter suppliers, and EPC contractors maintain buyer-wise sales registers.

Step 2, Threshold crossing: When sales to a single buyer exceed Rs 50 lakh in the financial year, TCS becomes applicable on all subsequent sales to that buyer. The first Rs 50 lakh is exempt; only the excess attracts TCS.

Step 3, TCS collection: On the invoice that crosses the threshold, and on all subsequent invoices, the seller adds TCS as a separate line item. For a PAN-holding buyer, the rate is 0.1%. The buyer pays the invoice amount including TCS.

Step 4, Deposit and return filing: The seller deposits the collected TCS with the government by the prescribed due date (typically 7th of the following month). The seller files quarterly TCS returns through the TRACES portal.

Step 5, Certificate issuance: The seller issues Form 27D, the TCS certificate, to the buyer. This certificate documents the TCS amount collected, the period, and the buyer’s PAN.

Step 6, Credit claim: The buyer includes the TCS amount in their annual income tax return as tax already paid. The TCS credit reduces the buyer’s total tax payable or increases their refund. The credit appears in the buyer’s Form 26AS, which can be downloaded from the Income Tax Department portal.

For buyers with sufficient income tax liability, TCS is a pure timing difference. For buyers with no tax liability, TCS results in a refund, though refund processing can take several months.

Visual Explanation

Real-World Example

A pharmaceutical company in Ahmedabad planned a 500 kW rooftop solar plant under the CAPEX model. The total project cost was Rs 2.25 crore, with equipment breakdown as follows.

Solar modules (Tier 1, 550 Wp): Rs 1.10 crore from Module Manufacturer A. String inverters (3 units): Rs 18 lakh from Inverter Supplier B. Mounting structures and cables: Rs 22 lakh from EPC Contractor C. Balance of system: Rs 15 lakh from EPC Contractor C.

TCS applied as follows.

Module Manufacturer A: Total sales Rs 1.10 crore. TCS applied on Rs 60 lakh excess at 0.1% = Rs 6,000. Inverter Supplier B: Total sales Rs 18 lakh. Below threshold. No TCS. EPC Contractor C: Total sales Rs 37 lakh. Below threshold. No TCS.

Total TCS paid: Rs 6,000. The company’s finance team collected Form 27D from the module manufacturer and claimed the Rs 6,000 credit in their income tax return. Because the company had taxable profits, the TCS reduced their advance tax payable.

If the company had purchased all equipment through a single EPC contractor at Rs 1.65 crore, the TCS would have been Rs 1.15 lakh (0.1% of Rs 1.15 crore excess). This illustrates how vendor selection affects TCS cash flow.

Technical Specifications and Benchmarks

Benefits and Advantages

Tax credit recovery: TCS is not an additional tax for most corporate buyers. It is an advance payment that adjusts against final tax liability. The full amount is recoverable.

Transaction transparency: TCS creates a formal record of large equipment purchases, which supports audit trails, warranty claims, and project documentation.

Government revenue assurance: From the government’s perspective, TCS ensures tax collection from large transactions even if buyers delay or default on year-end tax payments.

Data for policy: Aggregate TCS data helps policymakers understand solar equipment market volumes and trends, supporting subsidy and incentive design.

No GST interaction: TCS is independent of GST. Buyers claim GST input credit separately under the GST Act. TCS does not affect GST calculations or vice versa.

Limitations and Drawbacks

Working capital tie-up: TCS paid in April is not recovered until the income tax return is filed in July or September of the following year. This 15 to 18 month gap ties up cash, and finance teams sizing a term loan vs working capital facility for a project should model TCS as part of that gap rather than as a separate line item.

Administrative burden: Tracking thresholds, collecting certificates, reconciling Form 26AS, and claiming credit adds work for finance teams. Small companies without dedicated tax staff may struggle.

Non-PAN penalty: Buyers who fail to provide PAN face 5x to 10x higher TCS rates. This is punitive and entirely avoidable with proper documentation.

Refund delays: Buyers with no tax liability must claim refunds, which can take 6 to 12 months to process. This creates a longer cash tie-up than for taxpayers with liability.

Seller compliance risk: If the seller fails to deposit TCS or file returns, the buyer’s credit claim may be delayed or disputed. Buyer due diligence on seller compliance is important.

Threshold complexity: Tracking Rs 50 lakh per seller per year requires careful record-keeping, especially for buyers purchasing from multiple vendors across multiple projects.

Comparison: TCS vs TDS vs GST on Solar

All three can apply to the same solar project. A buyer may pay GST on module purchase, TCS on the same purchase if above threshold, and TDS on the EPC contract payment. Each operates independently with separate compliance requirements.

Applications

Residential rooftop solar (below 10 kW): TCS generally does not apply. System costs are below Rs 50 lakh, and purchases are typically from local installers who may themselves be below the Rs 10 crore turnover threshold.

Commercial rooftop solar (100 kW to 1 MW): TCS may apply for direct module purchases from manufacturers. Buyers purchasing through turnkey EPC contracts should verify whether the EPC contractor will pass through TCS or absorb it.

Industrial solar (1 MW to 10 MW): TCS is common. Module purchases alone often exceed Rs 50 lakh per vendor. Buyers should plan working capital for TCS and ensure PAN documentation is complete.

Utility-scale solar (10 MW+): TCS is standard. Large projects purchase Rs 10 to 30 crore of modules per vendor. TCS amounts range from Rs 1 to 3 lakh per vendor. Cash flow planning and vendor diversification are important.

OPEX and RESCO models: The RESCO contractor bears TCS on their equipment purchases. The consumer pays only for electricity and does not directly trigger TCS. This is one advantage of OPEX models for buyers who want to avoid equipment procurement complexity.

Solar EPC contractors: EPC contractors who purchase equipment on behalf of clients must track TCS on their own purchases. Contractors with turnover above Rs 10 crore must also collect TCS from clients if equipment sales exceed thresholds. Buyers evaluating contractors for large procurements should also confirm bankable EPC credentials, since lenders and insurers scrutinize the same vendor concentration that drives TCS exposure.

Industry Standards and Regulations

Income Tax Act 1961, Section 206C: The foundational provision for TCS, covering various categories of goods and services. Section 206C(1H) specifically addresses sale of goods above threshold.

Finance Act 2020: Introduced Section 206C(1H), effective 1 October 2020, expanding TCS to all goods sales above Rs 50 lakh threshold.

CBDT Notifications: The Central Board of Direct Taxes issues clarifications on TCS applicability, rates, thresholds, and compliance procedures. Solar buyers and sellers should monitor CBDT circulars for updates.

Form 27D: The prescribed TCS certificate format. Sellers must issue this to buyers within the specified timeline for buyers to claim credit.

Form 27EQ: The quarterly TCS return form filed by sellers through the TRACES portal.

Form 26AS: The buyer’s consolidated tax statement showing TCS credits, available on the Income Tax Department e-filing portal.

India-Specific Context

India’s solar market has unique characteristics that affect TCS applicability and planning.

Concentrated vendor base: Major solar module manufacturers in India include Waaree, Tata Power Solar, Adani Solar, Vikram Solar, and RenewSys. Large buyers often purchase Rs 1 to 10 crore from a single manufacturer, easily crossing the TCS threshold.

Import substitution trend: As domestic manufacturing grows under the PLI scheme, more buyers purchase from Indian manufacturers rather than importing. This increases TCS applicability since domestic sales fall under Section 206C(1H), while imports do not.

PM Surya Ghar residential segment: The Rs 50 lakh threshold effectively exempts nearly all residential rooftop systems. The average 3 kW system costs Rs 1.5 to 2 lakh. Even 10 kW systems cost under Rs 5 lakh. TCS is irrelevant for this segment.

Gujarat commercial solar growth: Gujarat leads India in rooftop solar adoption. Commercial and industrial buyers in Ahmedabad, Surat, and Vadodara routinely install 200 kW to 2 MW systems. Equipment purchases for these projects frequently trigger TCS.

EPC contract structuring: Some EPC contractors structure contracts as service agreements rather than goods sales to avoid TCS. However, tax authorities may reclassify mixed contracts based on the predominant nature of the transaction. Proper tax advice is essential.

Working capital for MSMEs: Small and medium enterprises installing solar may not have the cash flow buffer to absorb TCS tie-ups. RESCO and OPEX models are attractive for this segment precisely because the RESCO contractor handles equipment procurement and TCS compliance.

Future Trends

Digital TCS compliance: The Income Tax Department is digitising TCS processes. Real-time TCS tracking, automatic Form 26AS updates, and e-invoice integration will reduce administrative burden and speed up credit claims.

Threshold adjustment: The Rs 50 lakh threshold, set in 2020, may be revised upward to account for inflation. Any increase would reduce TCS applicability for mid-size commercial projects.

E-invoice linkage: As e-invoicing expands to smaller businesses, TCS calculation and reporting may become automated through invoice data, reducing manual compliance effort.

RESCO model growth: As more commercial and industrial buyers prefer OPEX models to avoid upfront capital and tax complexity, TCS will increasingly be handled by RESCO operators rather than end consumers.

GST-TCS integration discussions: While currently separate, there are periodic discussions about integrating indirect tax compliance. Any such change would significantly alter solar project taxation.

Common Mistakes and Misconceptions

Myth: TCS is an additional cost that increases project cost.

TCS is recoverable for most corporate buyers. It is a timing difference, not a permanent cost. Only buyers with no income tax liability face a refund delay, and even then the full amount is eventually returned.

Mistake: Forgetting to provide PAN to sellers.

The non-PAN TCS rate of 0.5% to 1% is 5 to 10 times higher than the PAN rate. Always provide PAN at the time of placing orders.

Mistake: Missing TCS certificates.

Without Form 27D, claiming TCS credit becomes difficult. Buyers should collect certificates promptly and maintain a dedicated file.

Mistake: Confusing TCS with TDS.

TCS is collected by the seller on goods sales. TDS is deducted by the buyer on service payments. They apply to different transactions and have different compliance processes.

Mistake: Not tracking cumulative purchases per seller.

Buyers purchasing from multiple sellers across projects must track each seller’s cumulative sales to know when thresholds are crossed.

Mistake: Treating TCS as a project cost in financial models.

TCS should be modelled as a working capital outflow with recovery, not as a permanent cost. Treating it as a cost understates project returns.

Mistake: Ignoring TCS in vendor selection.

Splitting large purchases across multiple sellers can keep each below the threshold, avoiding TCS entirely. This must be genuine commercial splitting, not artificial tax avoidance.

Mistake: Assuming imports avoid all tax complexity.

While imports avoid TCS, they involve customs duties, IGST, and import compliance. The total tax and compliance burden may be higher than domestic purchase with TCS.

Key Takeaways

• TCS on solar applies at 0.1% under Section 206C(1H) to solar equipment purchases exceeding Rs 50 lakh per financial year from a single seller.
• The seller collects TCS, deposits it with the government, and issues Form 27D to the buyer.
• Buyers claim TCS credit in their annual income tax return, making it an advance tax payment rather than a permanent cost.
• PAN-holders pay 0.1%; non-PAN buyers face 0.5% to 1%, a 5x to 10x penalty.
• TCS is generally irrelevant for residential rooftop solar but common for commercial, industrial, and utility-scale projects.
• TCS coexists with GST and TDS; all three can apply to the same solar project independently.
• Working capital planning must account for the 6 to 18 month gap between TCS payment and credit recovery.
• Vendor selection and contract structuring affect TCS applicability and cash flow impact.

Frequently Asked Questions

What is TCS on solar?

TCS on solar is Tax Collected at Source under Section 206C(1H) of the Income Tax Act. It applies at 0.1% on solar equipment purchases exceeding Rs 50 lakh per financial year from a single seller.

Does TCS apply to solar purchases?

Yes. TCS at 0.1% applies on sale of goods above Rs 50 lakh per annum from a single seller. Solar modules, inverters, and balance of system components fall under this provision.

What is the TCS rate for solar equipment?

Standard 0.1% on sale of goods above the Rs 50 lakh threshold. Higher rates of 0.5% or 1% apply if the buyer has not provided PAN.

When does TCS on solar apply?

When aggregate purchases from a single seller exceed Rs 50 lakh in a financial year. TCS is collected only on the amount above Rs 50 lakh.

Is TCS the same as GST on solar?

No. GST is a separate indirect tax under the GST Act. TCS is under the Income Tax Act. Both can apply to the same transaction independently.

Can TCS on solar be claimed back?

Yes. The buyer receives credit for TCS paid when filing their annual income tax return. TCS is essentially an advance payment of income tax.

Does TCS apply to residential rooftop solar?

Generally no, because residential systems cost less than Rs 50 lakh from a single seller. TCS applies mainly to large commercial and utility-scale projects.

Who collects TCS on solar equipment?

The seller collects TCS. This may be the module manufacturer or the EPC contractor depending on the procurement structure.

Does TCS apply to imported solar equipment?

No. For imports, customs duties and IGST apply rather than TCS under Section 206C(1H).

When did TCS on goods come into effect?

Section 206C(1H) was introduced effective 1 October 2020.

Is the TCS rate higher for non-PAN holders?

Yes. Without PAN, the rate increases to 0.5% or 1%.

Does TCS apply to OPEX or RESCO solar arrangements?

In RESCO arrangements, the contractor purchases equipment and TCS applies to their purchases. The consumer does not directly trigger TCS.

How does TCS affect solar project cash flow?

TCS is paid upfront but recovered at year-end. For large projects, this creates a temporary working capital outflow.

What records are needed for TCS compliance?

Buyers need Form 27D certificates, invoices showing TCS separately, and reconciliation with Form 26AS.

Can TCS be avoided by splitting purchases across sellers?

Genuine commercial splitting across sellers can keep each below the threshold. Artificial tax avoidance structuring may be challenged by authorities.

Related Resources

• GST on Solar Projects
• Accelerated Depreciation for Solar
• OPEX vs CAPEX Solar Models
• Solar EPC Services
• Commercial Solar Solutions
• Industrial Solar Solutions
• Solar Calculator

Related Glossary Terms

• Accelerated Depreciation
• MAT Credit
• GST Input Credit
• TDS on Solar
• CAPEX Model
• OPEX Model
• Power Purchase Agreement
• 80-IA Solar
• DSCR Solar
• Escrow Account Solar
• Solar Financial Closure
• Turnkey EPC
• Group Captive
• Open Access

Sources and References

• Income Tax Act 1961, Section 206C(1H)
• Central Board of Direct Taxes (CBDT) Notifications
• Finance Act 2020 (TCS on sale of goods introduction)
• CBDT Circulars on TCS applicability and compliance
• Chartered Accountant guidance on solar project taxation
• Heaven Green Energy project finance and procurement experience