Looking for expert help with Drip irrigation GST rate and HSN code? The team at Tax Garden, based in Kondapur, Hyderabad, helps Indian SMEs stay compliant. End-to-end filings, notices, and deadline tracking, all in one place.
Key Takeaways
- Drip irrigation systems including laterals, sprinklers and mechanical sprayers (8424) are 5% GST, and so are drip and sprinkler nozzles (Notification 9/2025-CT(R), Sch I S. Nos. 430 and 431).
- PVC pipes (3917), filters (8421), valves (8481) and power-driven pumps (8413) sold on their own are 18% (Sch II S. Nos. 118, 410, 466 and 400).
- Supply with installation for one price is a composite supply taxed at the rate of the principal supply (CGST Act Sections 2(30) and 8). Later repair visits are 18%.
- Credit that builds up from 18% inputs can come back as an inverted duty refund. From 1 November 2026 credit on input services counts too, and 90% can be paid provisionally (Notification 05/2026-Central Tax).
- Income tax: Section 44AD (6% or 8%) for FY 2025-26; belated AY 2026-27 returns close on 31 December 2026.
What is the GST rate on drip irrigation systems? Drip irrigation systems including laterals, sprinklers and mechanical sprayers fall under HSN heading 8424 and attract 5% GST (2.5% CGST plus 2.5% SGST) under Schedule I, S. No. 431 of Notification 9/2025-Central Tax (Rate), effective 22 September 2025. Drip and sprinkler nozzles are also 5% (S. No. 430). Loose PVC pipes, filters, valves and power pumps stay at 18%.
A typical drip irrigation dealer in Anantapur, Nashik, Jalgaon or Kurnool runs three businesses from one shop. You sell complete systems to farmers, often under a State micro-irrigation subsidy. You sell loose laterals, drippers, pipes and valves over the counter. And your fitters lay out and install systems in the field. Each of these sits on a different GST line, and the 5% system rate next to an 18% pipe rate is where most of the questions come from. This post covers GST rates, installation, registration, the inverted duty refund and income tax for FY 2025-26 (AY 2026-27) under the Income-tax Act 1961, with the Income-tax Act 2025 sections that apply from 1 April 2026. It's written for drip and sprinkler dealers, installers and the accountants who file their returns.
What GST rate applies to drip and sprinkler items?
Read the system entry first. Schedule I of Notification 9/2025-CT(R) has two lines for heading 8424: S. No. 430, "Nozzles for drip irrigation equipment or nozzles for sprinklers", and S. No. 431, "Sprinklers; drip irrigation system including laterals; mechanical sprayers". Both are 5%. The general 8424 entry in Schedule II (S. No. 413, 18%) expressly leaves these items out.
Tax Rate Chart
GST for Drip and Sprinkler Dealers (from 22 September 2025)
Drip irrigation system including laterals; sprinklers; mechanical sprayers (8424)
9/2025-CT(R) Sch I, S. No. 431
Nozzles for drip irrigation equipment or sprinklers (8424)
9/2025-CT(R) Sch I, S. No. 430
Hand pumps and parts (8413)
9/2025-CT(R) Sch I, S. No. 425
Plastic tubes, pipes, hoses and fittings (3917)
9/2025-CT(R) Sch II, S. No. 118
Filtering machinery for liquids (8421)
9/2025-CT(R) Sch II, S. No. 410
Taps, cocks and valves (8481)
9/2025-CT(R) Sch II, S. No. 466
Power-driven water pumps: centrifugal, submersible, tube-well turbine (8413)
9/2025-CT(R) Sch II, S. No. 400
Repair, maintenance and installation services (9987)
11/2017-CT(R) S. No. 25
Source: CBIC Notifications 9/2025-CT(R) and 11/2017-CT(R); CT(R) list checked up to 10/2026-CT(R) (27-28 October 2026), none of which amends these entries
Example: a counter sale. A farmer buys laterals for Rs 25,000 and some PVC pipes and two valves for Rs 8,000 to extend an old system. GST on the laterals at 5% is Rs 1,250. GST on the pipes and valves at 18% is Rs 1,440. The bill comes to Rs 35,690. Put the two groups on separate invoice lines with their own HSN codes.
The open question: a complete system. A field system has more than laterals and drippers. It has PVC mains and sub-mains, a screen or disc filter, a venturi, valves and fittings. Notification 9/2025-CT(R) says "drip irrigation system including laterals" but doesn't say whether separately priced mains and filters on the same invoice share the 5% rate. We haven't found a CBIC circular on this. Whichever approach you and your accountant settle on, keep the field layout, the bill of quantities and the invoice together, and apply it the same way on every job.
If you also sell tractors, sprayers or tillage equipment, our tractor and farm machinery dealers guide has those rates. For fertilisers and seeds, see our fertiliser and seed shop guide.
Is installation taxed separately?
Not when it's part of one supply. Section 2(30) of the CGST Act defines a composite supply as two or more supplies "naturally bundled and supplied in conjunction with each other in the ordinary course of business, one of which is a principal supply". Section 8(a) treats the whole as a supply of that principal supply. When you sell and install a drip system for one contract price, the system is the principal supply, so the contract takes the 5% goods rate.
Two situations change that:
- Repair and maintenance visits billed later. Fixing a choked filter or replacing damaged laterals months after the sale is a separate service under heading 9987, taxed at 18% (Notification 11/2017-CT(R), S. No. 25). Parts you fit on that visit can carry their own goods rate if you bill them separately.
- Installation-only jobs. If a farmer bought the system elsewhere and pays you only to lay it out and install it, there are no goods from you to be the principal supply. Bill it as a 9987 service at 18%.
Example: one contract, one rate. You quote Rs 1,10,000 for a 2-acre system: Rs 1,02,000 for the material and Rs 8,000 for installation. Treated as one composite supply, GST at 5% is Rs 5,500 on the full Rs 1,10,000. If the Rs 8,000 is a separate installation-only job instead, it's Rs 1,440 at 18%.
Subsidy jobs. Many systems are sold under a State micro-irrigation subsidy. Section 15(2)(e) of the CGST Act includes in the value "subsidies directly linked to the price", but excludes "subsidies provided by the Central Government and State Governments". How that applies depends on how your State releases the money, to the farmer or to you, and we haven't found a CBIC circular on micro-irrigation subsidies. Keep the sanction order, your quotation and the release advice with each invoice, and agree the treatment with your accountant before you file.
Moving a full system to a farm usually crosses the e-way bill limit. Rule 138(1) of the CGST Rules requires one when the consignment value exceeds Rs 50,000. Our e-way bill guide walks through it.
Will your 18% purchases leave credit stuck?
Often, yes. You sell at 5%, but much of what you buy (PVC pipes, filters, valves, shop rent, transport of goods) carries 18%. That gap is an inverted duty structure. Section 54(3)(ii) of the CGST Act lets you claim a refund of the unused credit, as long as the output isn't nil-rated or exempt. Drip systems aren't on the no-refund list in Notification 5/2017-CT(R).
The formula changes on 1 November 2026. Notification 05/2026-Central Tax substitutes Rule 89(5):
Maximum refund = (turnover of inverted rated supply x Net ITC / adjusted total turnover) minus tax payable on the inverted rated supply
Net ITC now means credit on inputs plus credit on "eligible input services", which are input services where you availed the credit on or after 1 November 2026. Capital goods credit comes in only from 1 April 2027, spread at 1/60 a month. Before November 2026, Net ITC covers inputs only.
Step-by-Step Guide
Working Out an Inverted Duty Refund for One Month (from November 2026)
Inverted rated turnover
You sell Rs 20,00,000 of drip systems at 5% in the month. Output tax: Rs 1,00,000. You have no other sales, so adjusted total turnover is also Rs 20,00,000.
Credit on inputs
Laterals and drippers bought at 5%: Rs 10,00,000, credit Rs 50,000. PVC pipes, filters and valves at 18%: Rs 5,00,000, credit Rs 90,000.
Credit on eligible input services
Shop rent of Rs 50,000 at 18%, credit availed in November 2026: Rs 9,000. Net ITC = Rs 50,000 + Rs 90,000 + Rs 9,000 = Rs 1,49,000.
Apply the formula
Rs 20,00,000 x Rs 1,49,000 / Rs 20,00,000 = Rs 1,49,000. Less tax payable of Rs 1,00,000 gives a maximum refund of Rs 49,000.
File RFD-01 within two years
The time limit runs from the due date of the GSTR-3B for the period the claim arises in (Section 54(1) and Explanation 2(e)).
Provisional 90%
From 1 November 2026, Section 54(6) covers inverted duty refunds (Finance Act 2026, in force under Notification 03/2026-Central Tax). The portal generates the provisional order in RFD-04 within three working days of acknowledgement for cases it doesn't flag as risky (Rule 91(2)). Here that's up to Rs 44,100.
Source: CGST Act Section 54(1), (3), (6); CGST Rules 89(5) and 91(2) as amended by Notification 05/2026-Central Tax (26 October 2026); Notification 03/2026-Central Tax
If you also sell loose pipes at 18%, those sales add to adjusted total turnover but not to inverted turnover, so the refund shrinks. A tractor, trencher or delivery vehicle bought before April 2027 doesn't count. Our inverted duty refund guide covers the filing.
Registration: Rs 20 lakh or Rs 40 lakh?
Section 22(1) of the CGST Act sets the registration limit at Rs 20 lakh, or Rs 10 lakh in special category States. Its third proviso allows up to Rs 40 lakh only for a supplier "engaged exclusively in the supply of goods". Notification 10/2019-Central Tax uses that power, but not in Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Puducherry, Sikkim, Telangana, Tripura and Uttarakhand. So a Telangana dealer registers above Rs 20 lakh even if it sells only goods. A dealer anywhere who bills installation-only or repair jobs supplies services too, so the Rs 40 lakh option is gone.
Most farmers aren't registered and can't use your credit, so some small dealers look at the composition scheme. A dealer whose aggregate turnover in the previous year didn't exceed Rs 1.5 crore (Rs 75 lakh in eight hill and north-eastern States) can opt in under Notification 14/2019-Central Tax. A trader pays 1% of turnover (0.5% CGST plus 0.5% SGST, Rule 7), can't take credit, and can't make inter-State supplies (Section 10(2)(c)). Services are allowed up to 10% of the previous year's turnover or Rs 5 lakh, whichever is higher. With 18% purchases and 5% sales, check the numbers both ways first: under composition all that 18% purchase GST becomes a cost. Our composition scheme guide has the conditions, and our registration limit guide has the detail. Our GST registration service files the application.
Income tax for drip and sprinkler dealers
Section 44AD. For FY 2025-26, a resident individual, HUF or partnership firm (not an LLP) can declare 6% of turnover received by bank transfer, UPI or other prescribed digital modes, and 8% of the rest, under Section 44AD of the 1961 Act. The limit is Rs 2 crore, or Rs 3 crore where cash receipts don't exceed 5% of turnover. From 1 April 2026 it's Section 58(2), Table Sl. No. 1 of the 2025 Act. It isn't open to you if you earn commission or brokerage or run an agency business (Section 58(11)(a)). A dealer who only books orders for a manufacturer for a commission is outside it.
Example. Turnover for FY 2025-26 is Rs 1,80,00,000: Rs 1,62,00,000 by bank and UPI, Rs 18,00,000 in cash. Cash is 10% of turnover, so the Rs 3 crore limit isn't available, but Rs 1.8 crore is within Rs 2 crore. Deemed profit is 6% of Rs 1,62,00,000 (Rs 9,72,000) plus 8% of Rs 18,00,000 (Rs 1,44,000), a total of Rs 11,16,000.
Tax audit. Section 44AB doesn't apply to a person who declares profit under Section 44AD(1) (first proviso to Section 44AB). Otherwise accounts need an audit once turnover exceeds Rs 1 crore, or Rs 10 crore where cash receipts and cash payments each stay within 5% (Section 44AB(a) of the 1961 Act; Section 63(1) of the 2025 Act from 1 April 2026). Under Section 58(3) of the 2025 Act, if you claim lower profit than the 6% or 8% figure and your income is above the basic exemption limit, you must keep books and get them audited. Opting out after using the scheme also brings a five-year lock-out (Section 58(7)). Our Section 44AD guide explains it.
Cash from farmers. Don't accept Rs 2 lakh or more from one farmer in a day, on one bill, or for one installation, except by account payee cheque, bank draft or bank transfer (Section 269ST of the 1961 Act; Section 186 of the 2025 Act). The penalty is equal to the amount received (Section 271DA; Section 451 of the 2025 Act). See our cash transaction limits guide.
TDS on fitters and sub-contractors. If your business is a company or firm, or a proprietor or HUF whose turnover exceeded Rs 1 crore in the previous year, you deduct TDS when you pay outside installation crews: 1% if the contractor is an individual or HUF, 2% otherwise, once one bill exceeds Rs 30,000 or the year's payments exceed Rs 1,00,000 (Section 194C of the 1961 Act; Section 393(1), Table Sl. No. 6(i) and Section 402(11) of the 2025 Act). Our Section 194C guide covers it, and our TDS filing service files the returns.
Deadline Timeline
AY 2026-27 Dates Still Open for Dealers
ITR for audit cases
Belated return
New GST refund formula
Source: Income-tax Act 1961 Sections 139(4) and 234F; CBDT Circular 07/2026; Notification 05/2026-Central Tax
Comparison
Selling Systems vs Installation-Only Work
| Parameter | Supply and install a drip system | Install or repair only |
|---|---|---|
| What you supply | Composite supply; goods are the principal supply | Service (heading 9987) |
| GST rate | 5% (8424, Sch I S. No. 431) | 18% (11/2017-CT(R) S. No. 25) |
| Registration limit | Rs 40 lakh only if goods-only and your State allows it | Rs 20 lakh (Rs 10 lakh in special category States) |
| Inverted duty refund | Usually available when 18% inputs pile up | Usually none: output is already 18% |
| TDS on your receipts | None from farmers | 1% or 2% if the customer is a designated person |
Source: CGST Act Sections 2(30), 8, 22, 54; Notifications 9/2025-CT(R), 11/2017-CT(R), 10/2019-CT; Income-tax Act 2025 Sections 393 and 402
Common mistakes drip irrigation dealers make
- Billing loose PVC pipes and valves at 5%. Only the 8424 items in S. Nos. 430 and 431 are 5%. Pipes, filters and valves sold on their own are 18%.
- Charging 18% on installation inside a system contract. If installation is bundled with the system you supply, the whole contract takes the principal supply's rate.
- Letting credit pile up without claiming a refund. The two-year clock runs from each period's GSTR-3B due date. Claim on a regular cycle.
- Counting service credit availed before 1 November 2026 in the refund. Only service credit availed from that date counts, and capital goods only from April 2027.
- Waiting for Rs 40 lakh in Telangana, or after taking repair work. The limit is Rs 20 lakh in both cases.
- Taking Rs 2 lakh or more in cash from one farmer. The penalty equals the cash received.
How Tax Garden helps drip and sprinkler dealers
We set up billing that puts every system, pipe, filter, pump and service on the right HSN line and rate, keep your subsidy paperwork with each invoice, and file GSTR-1 and GSTR-3B through our GST return filing service. We prepare your inverted duty refund under the new formula, keep your books through our accounting and bookkeeping service and file your return through our ITR filing service. Call or WhatsApp us on 9640290977.
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