Two schemes land on your desk: one offers '25% capital subsidy', the other '5% interest subvention for 5 years'. Which is worth more? Most founders can't answer — and scheme designers know it, which is why the same fiscal cost gets packaged both ways. The difference matters at lakhs-to-crores scale, interacts with your loan structure, and determines your cash-flow timing. Here is the working comparison every subsidy decision needs.
The two instruments, defined
- Capital subsidy: a grant against eligible investment (usually plant & machinery) — a percentage with caps, paid once (often in instalments/back-ended after commissioning or a lock-in), sometimes as 'margin money' adjusted against your loan (PMEGP style)
- Interest subvention: the government pays part of your loan's interest — expressed as percentage points (e.g., 3% under AIF, 5-7% in state MSME policies), for a defined tenure, flowing to the lender so your effective rate drops
- Cousins: SGST reimbursement (a turnover-linked stream), electricity-duty waivers (an opex stream), and credit guarantees (not money, but collateral relief that enables the loan itself)
The NPV math: a worked example
Project: ₹1 crore machinery, ₹75 lakh loan at 10% for 7 years. Option A — 25% capital subsidy (₹25 lakh, disbursed ~1 year after commissioning): worth ~₹22–23 lakh in present value. Option B — 5% subvention for 5 years on the ₹75 lakh reducing balance: saves roughly ₹3.2 lakh in year one, declining as principal amortises — totalling ~₹13–15 lakh nominal, ~₹11–12 lakh in present value. At these typical Indian scheme sizes, capital subsidies usually dominate — but flip the parameters (smaller capital-subsidy percentages, longer subvention tenures, larger loans relative to machinery) and the ranking reverses. The only honest method: model both on your actual loan schedule; an hour of spreadsheet decides lakhs.
Capital subsidies arrive late and conditionally — after commissioning proof, inspections and treasury cycles (12–30 month waits are common in state schemes; plan working capital as if the subsidy were year-two money). Subvention flows quarter-by-quarter through the lender with less drama. Discount capital-subsidy promises for both time and process risk before comparing.
Interaction effects that change the answer
- Loan size: subvention's value scales with borrowing — the self-funded project gets nothing from it; capital subsidy pays regardless of funding mix
- Prepayment plans: intending to repay early? Subvention's later-year value evaporates; capital subsidy is indifferent
- Margin-money structures (PMEGP): the 'subsidy' reduces your loan principal after lock-in — effectively a capital subsidy with a survival condition
- Tax: capital subsidies against assets typically reduce depreciable cost (Explanation 10 to Section 43(1)) — clawing back some benefit via lost depreciation; subvention reduces deductible interest. Model post-tax
- Stacking: most regimes allow one capital-subsidy source per asset but permit capital subsidy + subvention + duty waivers together (UP MSME policy pattern) — the stack, not the single instrument, is the real number
Reading schemes like an analyst
The questions that expose a scheme's true value: What is the cap (a '25% subsidy' capped at ₹10 lakh on your ₹2 crore machinery is really 5%)? What is eligible investment (land/building usually excluded; second-hand machinery often excluded)? When does money actually flow (disbursal conditions, instalments, budget-dependence)? What are the lock-ins and clawbacks (employment conditions, operation periods, category continuity)? And what does the claim process cost (CA certificates, inspections, follow-up — small subsidies with heavy processes can be negative-NPV after your time). Schemes are financial products; read them with a banker's cynicism and claim them with an accountant's discipline.
How Aidwish helps
Aidwish models the full incentive stack for every project it structures — NPV comparisons on your actual loan schedules, stacking design across central and state schemes, and the claim-process management that converts announced percentages into banked money.