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An Indian e-axle Tier-1 supplier to EV OEMs like Mahindra Electric, Tata Motors EV and Pininfarina operates in a commercial structure materially different from ICE Tier-1 patterns — high content density per unit (₹6-9 lakh), low part-count, OEM-specific tooling amortised over committed platform-life volume, RMPV exposure on rare-earth magnets and power semiconductors, PLI-Auto Component eligibility with 50 percent component-level DVA threshold, and warranty exposure measured in years. The reconciliation must hold standard goods-supply revenue, tooling-amortisation ledger, RMPV claim register, warranty accrual, three-sub-system BoM with domestic-vs-imported tagging and Section 393 code 1012 TDS receivable on the same data thread.
Maintain an e-axle SKU master with three-sub-system bill-of-materials (motor / gearbox / inverter+ECU) each line tagged domestic or imported referenced to supplier GSTIN invoice or Bill of Entry. Compute per-batch component-level DVA aggregated across the three sub-systems. Run RMPV claim register tied to published rare-earth and semiconductor reference indices with quarterly OEM claim files. Maintain tooling-amortisation ledger per platform per OEM with per-unit recovery rate; classify as goods-supply or service-supply per commercial arrangement. Accrue warranty provision per Ind AS 37 at platform-specific failure-rate assumption. Recognise revenue at Ind AS 115 control transfer with separate PO for tooling-recovery where applicable. Deduct Section 393(1)(k) code 1012 TDS at 0.1 percent on purchases above ₹50 lakh FY threshold.
E-axle SKU master with platform-OEM mapping; three-sub-system BoM with domestic-or-imported flagging per line; supplier master and Bill-of-Entry register; rare-earth-magnet RMPV reference-index tracker with trigger band per OEM contract; tooling-amortisation ledger per OEM platform with committed volume and per-unit recovery; warranty-provision computation per platform per quarter; PLI-Auto Component registration with base-year and incremental-sales calculator; Ind AS 115 multi-PO transaction-price allocation; Section 393 code 1012 TDS receivable ledger; Form 26AS quarterly reconciliation by OEM TAN.
A per-batch component-level DVA reconciliation pack with three-sub-system BoM evidence; per-platform RMPV claim file with reference-index history and OEM filing status; tooling-amortisation recovery report tied to platform-life volume against actual draw; Ind AS 37 warranty accrual per platform; quarterly PLI-Auto Component claim file with PMA-IFCI methodology; Section 393 code 1012 TDS chase against Form 26AS by OEM TAN; clawback-resistant audit trail per unit sold tying revenue, RMPV recovery, tooling recovery and warranty accrual to the same SKU-batch.
A Pune-based e-axle Tier-1 closes Q1 FY 2026-27 with 18,400 e-axles dispatched to Mahindra Electric’s Chakan plant for the XUV400 and BE 6 platforms. Each e-axle carries ₹6.8 lakh average content — motor, single-speed reduction gearbox and integrated inverter+ECU — plus ₹450 per unit tooling amortisation, an RMPV claim accrued at ₹1,200 per unit on the quarter’s rare-earth magnet price move, and a 7-year extended warranty accrual at ₹2,800 per unit per platform-specific failure-rate assumption. The e-axle supplier reconciliation India workflow ties one quarterly sale book of approximately ₹133 Cr to a defensible 50 percent component-level DVA across three sub-system BoMs, a tooling-amortisation draw against committed platform-life volume, an RMPV claim against published rare-earth index, a warranty-provision computation under Ind AS 37, and a Section 393(1)(k) code 1012 TDS chase against Mahindra’s Form 26AS filing.
Quick reference
| Concept | Value | Source |
|---|---|---|
| AAT component category | E-axle / electric powertrain | PLI-Auto Component matrix |
| Component DVA threshold | 50% (component-level) | PLI-Auto Component |
| Typical e-axle content | ₹6-9 lakh per unit | Industry data |
| Sub-system count | Motor + gearbox + inverter+ECU | Standard architecture |
| Rare-earth magnet exposure | NdFeB (with Dy/Tb for high-temp) | Permanent-magnet topology |
| RMPV reference indices | LME (base metals), magnet-specific published indices | Tier-1 contracts |
| Tooling amortisation | Over committed platform-life volume | Ind AS 16 (Tier-1) or Ind AS 116 (OEM) |
| Warranty period (e-axle) | 5-8 years typical | OEM-specific |
| Section 393(1)(k) code 1012 TDS | 0.1% on purchase above ₹50L FY | Income Tax Act 2025 |
| Toolage charge GST | 18% SAC 998599 (where OEM owns tooling) | CGST tariff |
What is an e-axle and how does it differ from a modular EV powertrain?
An e-axle integrates three sub-systems into one mechatronic assembly:
| Sub-system | Function | Imported content typical |
|---|---|---|
| Traction motor (PMSM or induction) | Generates traction torque | Rare-earth magnets (NdFeB), some specialty steel laminations |
| Reduction gearbox (single- or two-speed) | Steps motor RPM to wheel RPM | Bearings, certain precision-ground gears |
| Inverter + ECU | Power electronics, motor control, regen | MCU, power MOSFETs/IGBTs, gate drivers, current sensors |
The integrated sub-assembly mounts on the driven axle of the EV — front axle for FWD EVs, rear for RWD. The e-axle replaces engine + transmission + driveshaft + differential of an ICE car.
A modular EV powertrain, by contrast, uses separately packaged motor, gearbox and inverter components — sourced from different Tier-1s and integrated at the OEM at vehicle assembly. Modular is the legacy pattern (carried over from ICE supply-chain practice); integrated e-axle is the platform-of-the-future pattern (lower part count, lower vehicle weight, easier vehicle-line assembly).
Indian EV OEMs are split — Tata Motors and Mahindra have historically used modular sourcing with OEM-led integration; new entrants and global JVs (Pininfarina, JBM Auto, Vinfast India) are moving to full e-axle from a single Tier-1 for new platforms.
How does the e-axle commercial structure differ from ICE Tier-1 patterns?
Three differences:
-
Content density per unit — an e-axle carries ₹6-9 lakh content per unit, materially higher than an ICE engine (₹3-5 lakh from a Tier-1) plus gearbox (₹1.5-2.5 lakh) sourced separately. The financial volume runs through fewer transactions and the working-capital intensity per unit is higher.
-
Part-count reduction — one mechatronic assembly replaces 200-plus moving parts in an ICE powertrain. The supplier’s BoM is shorter but each line is materially more valuable. The DVA tracking has fewer lines but tighter scrutiny per line.
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OEM-specific tooling and longer NRE recovery — the e-axle is designed around the OEM’s vehicle platform with dedicated dies, fixtures, EOL test rigs and assembly line. A typical e-axle programme requires ₹4-8 crore of OEM-specific tooling amortised over the platform-life committed volume (typically 1-3 lakh units over 5-7 years). The Tier-1 either capitalises the tooling under Ind AS 16 and recovers through per-unit price, or the OEM owns the tooling and the Tier-1 recovers separately as a toolage charge.
The reconciliation must hold standard goods-supply revenue, tooling-amortisation ledger, RMPV claim register and warranty accrual on the same SKU-batch thread.
What is the RMPV exposure on rare-earth magnets and how is it reconciled?
PMSM motors — the dominant topology in modern EV traction motors and therefore in e-axles — use NdFeB permanent magnets containing neodymium and (for high-temperature variants) dysprosium or terbium. The rare-earth supply chain is overwhelmingly concentrated in China (95-plus percent of refining capacity), and the magnet price is exposed to:
- International rare-earth price volatility (NdPr and Dy/Tb published indices)
- Geopolitical supply restrictions (China export control announcements)
- Currency movement against the rupee (USD-based pricing)
- Specialty-steel and copper price moves (motor laminations, windings)
Indian e-axle Tier-1s typically negotiate an RMPV clause with the OEM permitting price-pass-through above a trigger band. The standard structure:
- Base price established at programme award referenced to a published index value
- Quarterly or half-yearly review against the index
- Price escalation or de-escalation per unit applied when the index moves beyond the trigger band (typically 5 percent)
- Claim filed with the OEM by the Tier-1; OEM accepts after verification
The reconciliation tracks:
- The reference index per quarter
- The committed base price per platform
- The computed RMPV per unit per shipment
- The claim filed and ageing against OEM-side settlement
See the RMPV Calculator for the standard mechanics.
How is tooling amortisation handled?
Two models:
Tier-1-owned tooling (Ind AS 16)
The Tier-1 capitalises the tooling under Ind AS 16 and amortises over the platform-life committed volume. The per-unit recovery is bundled into the unit price as part of the goods supply at notified GST rate. Risk on volume shortfall sits with the Tier-1 — if the actual platform volume falls below committed, the residual carrying value is impaired under Ind AS 36.
Reconciliation:
- Per-platform tooling capitalisation register
- Per-unit recovery rate (₹X per unit over Y committed units)
- Actual draw against committed volume monthly
- Annual Ind AS 36 impairment test if volume runs below trajectory
OEM-owned tooling (Tier-1 recovers as toolage charge)
The OEM owns the tooling and the Tier-1 recovers separately as a toolage charge. The toolage charge is a service supply at 18 percent GST under SAC 998599 — separate from the goods supply of e-axle units. Risk on volume shortfall sits with the OEM.
Reconciliation:
- Per-platform toolage charge invoice
- 18 percent GST output as service supply
- OEM payment ageing against contracted terms
- Section 393 code 1003 (legacy 194J) TDS at 10 percent or code 1002 (legacy 194C) at 1-2 percent depending on the contract classification — under the e-axle reconciliation discipline this is usually code 1002 because it is bundled with the standard supply contract
See the Tooling Amortisation Calculator for the standard mechanics.
Three-Way Match Exception Cost Calculator
Quantify the cost of unresolved e-axle supply exceptions — RMPV-claim ageing, tooling recovery shortfalls, content-evidence mismatches and warranty drift all age into accepted losses if not closed in cycle.
Open the Exception Cost Calculator →Worked example — Pune e-axle Tier-1 to Mahindra Electric, Q1 FY 2026-27
- E-axles dispatched in Q1: 18,400 across two platforms (XUV400 11,200; BE 6 7,200)
- Per-unit ASP: ₹7.2 lakh average
- Total dispatch value: ₹132.5 Cr (gross of RMPV)
- Three-sub-system per-unit content breakdown:
- Motor (PMSM with NdFeB magnets): ₹2.6 lakh
- Reduction gearbox (single-speed): ₹1.4 lakh
- Inverter + ECU: ₹2.0 lakh
- Assembly, test, packaging, balance: ₹0.6 lakh
- Imported content per unit (net of MOOWR refund): ₹3.1 lakh — primarily rare-earth magnets, MCU, power MOSFETs, certain bearings
- Component-level DVA: (₹7.2 lakh minus ₹3.1 lakh) divided by ₹7.2 lakh = 57 percent — above 50 percent threshold
- Tooling amortisation: ₹6.2 Cr capitalised across both platforms, amortised at ₹450 per unit over committed 1.4 lakh units. Q1 recovery: 18,400 × ₹450 = ₹82.8 lakh
- RMPV claim for Q1 (rare-earth index moved 8 percent against trigger band of 5 percent): ₹1,200 per unit × 18,400 = ₹2.2 Cr claim accrued, filing in progress with Mahindra
- Warranty accrual under Ind AS 37 at ₹2,800 per unit (7-year extended warranty, 0.5 percent failure-rate assumption): ₹5.15 Cr accrued in Q1
- Base-year sales: 14,000 quarterly; Q1 incremental sales: 4,400
- PLI-Auto Component incentive (illustrative band at scheme matrix): ₹6,000-8,000 per incremental unit
- Estimated quarterly PLI claim: ₹2.6 to ₹3.5 Cr
- Section 393(1)(k) code 1012 TDS deducted by Mahindra at 0.1 percent on purchases above ₹50 lakh FY threshold: ₹13.3 lakh on the ₹132.5 Cr Q1 sale
What does the Section 393 / GST overlay look like?
- Section 393(1)(k) code 1012 (legacy 194Q) — 0.1 percent TDS on purchases above ₹50 lakh FY threshold. See Payment Code 1012.
- Section 393(1)(a) code 1002 (legacy 194C) — applies to toolage charges where the OEM owns tooling and the Tier-1 recovers separately.
- GST on e-axle goods supply — IGST/CGST+SGST at notified rate at control transfer. ITC on imported-content customs IGST available subject to GSTR-2B match.
- GST on toolage charge (OEM-owned-tooling model) — 18 percent SAC 998599 service supply.
- GST on RMPV claim — treated as price adjustment to original supply; supplementary invoice with corresponding GST output adjustment.
- Cross-era note — pre-1 April 2026 TDS under legacy Section 194Q cross-referenced to code 1012 for at least one FY cycle. See TDS payment codes 1001-1092 India.
MHI authority reference
For PLI-Auto Component scheme guidelines on e-axle and electric powertrain components, AAT eligibility matrix, DVA computation rules and the broader automotive incentive framework see the Ministry of Heavy Industries (MHI), Government of India.
What automated reconciliation changes
Running an e-axle supplier book with three sub-system BoMs per SKU, tooling-amortisation ledger per platform, RMPV claim register against published rare-earth indices, warranty accrual under Ind AS 37, PLI-Auto Component quarterly claim and Section 393 code 1012 TDS chase is one of the most reconciliation-dense workflows in Indian EV component supply. Purpose-built auto component reconciliation software India holds the e-axle SKU master, the three-sub-system BoM with domestic-or-imported tagging, the RMPV index tracker with OEM-claim builder, the tooling-amortisation draw, the warranty provision and the multi-code TDS ledger in one frame. Customer outcomes include match rate improvement from 51 percent to 88 percent on revenue-grade ledgers. Build is two-to-four weeks on AWS Mumbai (ISO 27001:2022). For the inbound procurement match on motor laminations, magnets, gearbox bearings, MCU and power semiconductors see three-way matching software India.