When does moisture cause a rebate?

On the mustard physical-delivery FAQ spec, moisture rebates only when it is above the 5% basis: rebate = − base rate × (moisture − 5) × rebate ratio ÷ 100. At or below 5% there is no moisture rebate.

How are per-bag terms converted to ₹/quintal?

The ₹/bag deduction and the g/bag weight-loss allowance are scaled by 100 ÷ bag weight (kg) to express them per quintal, so they stay correct when the bag size changes.

Mustard FAQ quality parity calculator — India

Q: How is the mustard oil % rebate calculated?

Oil is priced pro-rata to the 42% FAQ basis: oil adjustment = base rate × (lab oil − 42) ÷ 42 — a discount below the 42% basis, a 1:1 premium above when enabled. Separately, a standard 0.2% oil report deduction is always applied as base rate × 0.2 ÷ 42, even when oil is exactly at basis.

Q: What gets a mustard lot rejected?

Acceptance gates flag the lot when lab oil is below 39%, moisture is above 7%, foreign matter is above 1.5%, or FFA is above 1%. These are editable to match your own contract.

Price a mustard / RM seed lot against the physical-delivery FAQ spec: oil, moisture and FM rebates on the FAQ base rate, then the commercial terms — cash discount, bag deduction, weight-loss allowance and unloading — to a net ₹/quintal and lot value. Every value editable to your own contract.

Open the Mustard Quality calculator →

What it does

Each parameter is compared to the mustard FAQ basis and converted to a rupee adjustment, then the per-bag commercial terms are folded in. It also flags acceptance gates (lab oil < 39%, moisture > 7%, FM > 1.5%, FFA > 1%).

The formula

Oil: priced pro-rata to the 42% FAQ basis — one oil point is worth Rate ÷ 42, so oil adj = R × (lab oil − 42) ÷ 42 (discount below 42%; premium above 42% if enabled). E.g. at ₹7,000 with 41% oil: 7,000 × (42 − 41) ÷ 42 = −₹166.67.
Oil report deduction: a standard rebate, always applied on the same basis — −R × 0.2 ÷ 42 — even when oil is exactly at 42%.
Moisture: rebate only above the 5% basis — −R × (moisture − 5) × ratio ÷ 100.
Foreign matter: rebate only above the FM basis (0% default) — −R × (FM − basis) × ratio ÷ 100.
Subtotal → less cash discount (% of net payable) → less bag deduction (100 ÷ bag kg) × ₹/bag → less weight-loss allowance → less unloading = net rate ₹/quintal; × quantity = lot value.

Worked example

FAQ base ₹6,000/qtl, lab oil 42%, moisture 5%, FM 0%, FFA 1%, 85 kg bags, ₹20/bag deduction, 1% cash discount, 200 g/bag weight loss:

Oil 42% = on the 42% basis → oil adjustment ₹0
Oil report deduction = 6,000 × 0.2 ÷ 42 = −₹28.57 (always applied)
Moisture 5% = on basis → ₹0; FM 0% → ₹0
Subtotal = 6,000 − 28.57 = ₹5,971.43
Bag deduction = (100 ÷ 85) × 20 = −₹23.53
Weight-loss allowance ≈ −₹14.00
Net payable ≈ ₹5,933.90 → cash discount 1% = −₹59.34
Net rate ≈ ₹5,874.56/quintal · status: within spec ✓

How is the mustard oil % rebate calculated?

Oil is priced in proportion to the 42% FAQ basis: each oil point is worth Rate ÷ 42, so oil adj = R × (lab oil − 42) ÷ 42 — a discount below the basis, a 1:1 premium above when enabled. A standard 0.2% oil report deduction is always charged separately on the same Rate ÷ 42 basis, even when oil meets 42%.

What gets a mustard lot rejected?

The calculator flags lab oil below 39%, moisture above 7%, FM above 1.5%, or FFA above 1% — all editable to your own contract.

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