Accelerated Depreciation: The 40% Tax Lever Behind MSME Solar

Accelerated depreciation (AD) lets a business claim 40% depreciation on a solar asset in its first year, on top of normal depreciation on the balance. For a profitable company, that converts a large slice of the investment into an early tax shield — a lever that homes and most housing societies simply cannot pull, and the main reason commercial payback often looks shorter than residential.

The mechanism is straightforward even if the arithmetic needs your accountant. On a plant costing a few tens of lakhs, the first-year depreciation reduces taxable profit, and at a 25–30% effective tax rate that shield recovers a meaningful share of the cost in year one. Stacked on top of the electricity bill savings from net metering, a profitable MSME frequently sees payback land well inside the CAPEX-only estimate.

The eligibility fine print matters. You need taxable business profit to absorb the shield, and the asset must be owned outright (a CAPEX purchase) — a RESCO or lease model puts depreciation on the developer’s books, not yours. Loss-making or newly incorporated units get limited immediate benefit and may be better served by a different structure.

One change to know about: India’s new Income-tax Act, 2025 came into force on 1 April 2026 and replaces the 1961 Act from tax year 2026-27. Depreciation provisions were re-enacted under new section numbers — the sources we checked disagree on the exact number, so check the current text rather than relying on guides that still cite “Section 32” — and depreciation rates are reported to have carried over unchanged, which means the 40% rate for solar power systems should still apply. Confirm the current section and rate with your CA before building it into a business case.

One interaction to plan for: AD projects are unsubsidised, so your panel choice is driven by quality and price rather than DCR rules — but a net-metered C&I system still faces the ALMM List-II commissioning deadline. This article is educational, not tax advice; confirm the current depreciation rate and your specific eligibility with a chartered accountant before you build it into a business case.