Tooling Cost Recovery and Amortisation for Auto-Component Programmes: Models Explained

A Tier 1 plastic-components supplier in Pune holds an ₹8 crore injection mould for a Maruti Brezza dashboard interior panel — capitalised under Plant and Machinery, depreciated at 15 percent WDV in the supplier’s books, with ₹80 per part of tooling amortisation embedded in the part price against a committed 100,000-unit programme slice. Four years in, Maruti has lifted 65,000 of those 100,000 units against a model facelift that has cannibalised the variant the mould serves. The supplier is sitting on ₹28 lakh of unrecovered tooling balance and is preparing a shortfall debit note under the LTA’s committed-volume clause. This is the shape of tooling cost recovery amortisation auto component India work: a single capital asset that runs four parallel reconciliations — depreciation book, amortisation revenue accrual, GST capital-goods routing, and programme-volume shortfall.

Quick reference

What are the two main tooling ownership models

Two recovery models dominate Indian auto-component supply, with hybrids at the margin.

Supplier-owned model. The supplier funds the tool, owns it, capitalises it, depreciates it under Section 33 of the Income Tax Act 2025 (the consolidated successor to Section 32 of the Income Tax Act 1961), and recovers the cost as per-part amortisation embedded in the part price over the committed programme volume. The tool sits in the supplier’s fixed-asset register, on the supplier’s balance sheet, and in the supplier’s depreciation book. The OEM never sees a tooling line item — the recovery is invisible inside the part price.

OEM-owned model. The supplier invoices the OEM for the tool at programme start under a separate tax invoice — HSN 8480 for moulds, HSN 8466 for jigs and fixtures, typically at 18 percent GST. The OEM capitalises and depreciates the tool in its own books. The tool sits physically at the supplier premises under a bailment arrangement, and the part price excludes any tooling amortisation. The tool is in the OEM’s fixed-asset register, in the OEM’s depreciation book, and the supplier holds it as a bailee, recorded only in the supplier’s bailee register.

Hybrid. Many programmes split the tool — typically 50-70 percent OEM contribution at programme start with the balance recovered per-part. The split is documented in the LTA, the GST routing follows accordingly, and reconciliation runs both ledgers.

The choice between models is driven by working-capital posture, programme term certainty and the OEM’s tooling-investment policy. Maruti has historically run a high OEM-owned share on flagship programmes; Hero, Bajaj and TVS run more supplier-owned arrangements on mature platforms.

How is per-part amortisation arithmetically computed

Per-part amortisation = total tooling cost ÷ committed programme volume.

A worked sequence:

• Injection mould cost: ₹8 crore (full tool cost capitalised)
• Programme committed volume: 100,000 units of Maruti Brezza interior panel
• Per-part amortisation: ₹8 crore ÷ 100,000 = ₹800 per part

In practice ₹800 per part is too large for the part price to absorb on most programmes, so the same tool would typically be amortised over a longer-horizon view — say a 1,000,000-unit total programme commitment across model variants — at ₹80 per part. The 100,000-unit Brezza-specific slice then recovers ₹80 lakh; if the OEM lifts only 65,000 units, the unrecovered slice is 35,000 × ₹80 = ₹28 lakh.

Reconciliation must track cumulative amortisation realised against the original tool cost so the supplier knows when full recovery is achieved and whether a shortfall is opening up. The accrual is invisible inside part-price revenue, so a separate sub-ledger is the only way to keep this honest.

What is the Income Tax Act 2025 depreciation treatment

In the supplier-owned model the supplier capitalises the tool at acquisition cost, classifies it under Plant and Machinery, and claims depreciation under the Income Tax Act 2025 framework:

• Base depreciation: 15 percent on written-down value for general plant and machinery
• Additional depreciation: 20 percent on actual cost in the year of acquisition where the conditions in the carried-forward Section 33 framework are met (new asset, used in manufacturing, before specified cut-off where applicable)
• Where the tool qualifies as a specially designed or specified asset attracting a higher rate, that rate applies

For the Companies Act 2013 book, depreciation runs on Schedule II useful-life basis — typically 8-15 years for moulds and dies depending on usage intensity, with the WDV or SLM method per company policy.

Two books, two rates, two timing patterns. The per-part amortisation built into the sale price is revenue (taxable as it accrues); the depreciation is a tax deduction (timing-different). The two streams do not reconcile to each other and should not be netted. A common reconciliation error is treating per-part amortisation revenue as a recovery against the depreciation deduction — they are independent.

How is the GST capital-goods Rule 43 treatment applied

When the tool is invoiced separately to the OEM under the OEM-owned model, the OEM books it as a capital good. Rule 43 of the CGST Rules governs capital-goods ITC where the goods are common to taxable and exempt supplies:

• Total ITC is amortised over 60 months
• The exempt-supply attributable portion is reversed monthly using the prescribed formula
• The reversal continues for the full 60-month life

For a pure taxable-supply OEM (which most auto OEMs are on their core vehicle output), Rule 43 reversal is nil and the full ITC is available — but the documentation and 60-month tracking are still required. For OEMs with any exempt-supply leg (export of certain components, supplies to SEZ on a non-taxable basis), the monthly reversal is real.

The supplier’s GST routing on the tooling invoice is straightforward: tax invoice at HSN 8480 or 8466 at 18 percent, output GST paid in the month of invoice. The Rule 43 amortisation sits on the OEM side. The supplier should, however, configure the tooling invoice with the right HSN — a tooling invoice misclassified under HSN 8708 (auto parts) attracts the same rate but triggers a downstream classification dispute under the OEM’s procurement audit.

How does tooling buyback work at programme end

At programme end the tool typically follows one of three paths:

1. OEM buyback at residual value. The supplier raises a fresh tax invoice for the residual value (often a small nominal amount after full amortisation). The OEM books it as capital goods, claims ITC at the tooling HSN rate.
2. Continued use on a derivative programme. The tool remains on the supplier’s fixed-asset register but starts a fresh amortisation cycle for the next programme at a renegotiated per-part rate based on residual cost.
3. Scrap. The tool is sold for scrap to a scrap dealer. The supplier raises a tax invoice at scrap HSN (7204 for ferrous scrap, 3915 for plastic scrap) at the applicable rate, books the scrap proceeds, and writes off any residual book value.

In the OEM-owned model the tool stays with the OEM at programme end — the supplier executes a return-of-bailee certificate and removes the tool from the bailee register.

How does the shortfall claim work when the OEM under-lifts

Most LTAs and tooling agreements carry a committed-volume clause: if the OEM lifts less than the committed quantity over the programme tenure, the supplier is entitled to a shortfall recovery for the unrecovered tooling balance.

The arithmetic:

• Shortfall = (committed volume − actual lifted volume) × per-part tooling amortisation

For an ₹8 crore tool with the ₹80 per part recovery rate and the 100,000-unit Brezza-specific committed slice:

• Committed: 100,000 units
• Lifted: 65,000 units
• Shortfall units: 35,000
• Shortfall amount: 35,000 × ₹80 = ₹28 lakh

The supplier raises a tooling shortfall debit note on the OEM. The OEM may pay, contest or negotiate. The GST treatment on the shortfall debit is contract-dependent — most commonly treated as a residual supply of tooling balance at the tooling HSN rate of 18 percent, with the supplier paying output GST and the OEM claiming ITC under Rule 43 amortisation.

Contest grounds the OEM commonly raises:

• Model facelift / variant change not attributable to OEM under the LTA force-majeure carve-out
• Supplier quality issue that triggered a re-source — supplier’s own fault, no shortfall claim
• Committed volume interpretation dispute — is it programme-life or annual?
• Tool already partially recovered through cross-programme use

Each contest path needs evidence: the LTA tooling annex, the programme committment letter, the cumulative invoice ledger, and the supplier’s depreciation book. Without that ledger trail the shortfall claim is typically negotiated down to 40-60 percent of the asserted number.

Worked example — ₹8 crore mould, 100,000 unit commitment, 65,000 lifted

• Supplier: Tier 1 plastic-components manufacturer, Pune plant
• OEM: Maruti Suzuki India
• Programme: Brezza interior dashboard panel, 4-year tenure
• Tool: Injection mould, capitalised at ₹8 crore in supplier books
• Ownership model: Supplier-owned, per-part amortisation embedded in part price
• Committed volume (Brezza-specific slice): 100,000 units
• Per-part amortisation: ₹80 (against a wider 1,000,000-unit programme-level tooling envelope; tool serves multiple variants)
• Brezza-specific recovery target: ₹80 lakh
• Lifted volume after 4 years: 65,000 units (model facelift cannibalised the variant in Year 3)
• Cumulative amortisation realised: 65,000 × ₹80 = ₹52 lakh
• Shortfall on Brezza slice: 35,000 × ₹80 = ₹28 lakh
• Depreciation booked under Income Tax Act 2025 framework across 4 years: ~₹4.2 crore cumulative WDV depreciation on the full ₹8 crore tool
• Depreciation booked under Companies Act 2013 Schedule II (12-year useful life, SLM): ~₹2.66 crore cumulative
• WDV of tool in supplier books at programme end: ~₹3.8 crore (income tax book) / ~₹5.34 crore (Companies Act book)
• Shortfall debit note raised on Maruti: ₹28 lakh at HSN 8480, 18 percent GST = ₹5.04 lakh output GST
• Supplier expects to negotiate down to ~₹18-22 lakh after model-facelift contest
• Tool re-purposed for derivative variant: residual book value carried forward, new per-part amortisation reset at residual ÷ new committed volume

What does the Section 393 / Section 413 overlay look like for tooling

A Tier 1 acquiring a tool from a domestic toolmaker (Godrej Tooling, Sahajanand, JBM Group toolroom) pays a tooling invoice that attracts Section 393(1)(k) TDS at code 1012 (legacy 194Q) at 0.1 percent on the purchase value above ₹50 lakh aggregate per vendor per FY, where the buyer’s turnover exceeds ₹10 crore. For imported tooling (Klöckner Desma, Engel, Sumitomo) Section 413 withholding applies under the Income Tax Act 2025 framework at the treaty rate on any associated service component (commissioning, programming, transfer of know-how), with Form 15CA/15CB. For the full payment-code reference see TDS payment codes 1001-1092 India and the Section 393 TDS new Income Tax Act reconciliation.

For the operational reconciliation view on tooling amortisation see the sibling tooling amortisation reconciliation, and for the broader capital-goods ITC framework that drives Rule 43 see manufacturing GST ITC capital goods reconciliation.

ACMA authority reference

For industry tooling-ownership conventions, per-part amortisation practice, programme-volume commitment models and tooling buyback norms see the Automotive Component Manufacturers Association of India (ACMA).

What automated reconciliation changes

Tooling reconciliation is a four-layer problem — depreciation book, amortisation revenue accrual, Rule 43 ITC schedule, committed-volume shortfall — running across a 5-to-10-year programme tenure. Spreadsheet trails break by Year 3. Purpose-built auto component reconciliation software India holds the tool master with ownership model and committed volume, ties cumulative lifted volume to per-part amortisation realised, drives the Rule 43 60-month ITC schedule, and surfaces shortfall claims at programme close in a single frame. TransactIG carries 24+ industry presets including auto component. 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 tool acquisition see three-way matching software India. For the cluster sub-pillar see automotive component manufacturing reconciliation in India.

Continue reading in the cluster

• Tooling amortisation reconciliation (operational view)
• Manufacturing GST ITC capital goods reconciliation
• OEM-Tier 1 settlement and debit note reconciliation
• Automotive component manufacturing reconciliation in India (sub-pillar)