Sibling Discount Calculator
Estimate what a family pays when the second and third child get percentage concessions.
- 100% free
- No sign-up required
- Instant results
- Math steps shown
- Fees sorted highest → lowest (discount usually applies to younger / lower fee):
- Slot 1: ₹80,000 − 0.0% = ₹80,000
- Slot 2: ₹75,000 − 10.0% = ₹67,500
- Combined payable = ₹1,47,500
| Sibling | Gross fee | Discount | Net |
|---|---|---|---|
| Sibling slot 1 | ₹80,000 | 0.0% | ₹80,000 |
| Sibling slot 2 | ₹75,000 | 10.0% | ₹67,500 |
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How sibling discounts are applied
Each block explains one part of how this works and how to read the result.
Highest fee first
Fees are sorted highest to lowest. Slot 1 (usually the eldest / highest fee) gets 0% sibling discount; slot 2 uses your 2nd-child %; slot 3 uses your 3rd-child %. Many schools discount the younger child’s fee — if your circular differs, reorder inputs to match.
Frequently asked questions
Why sort fees?
So the full fee is paid on the highest head and discounts apply to lower fees — a common Indian school pattern.
Only two children?
Leave the third fee at 0.
Flat ₹ discount instead of %?
Convert flat discounts into an equivalent % or subtract them using the scholarship-adjusted calculator.
Transport included?
Include it in each child’s fee if your policy discounts the whole bill.
Related fee & finance calculators
More free calculators and formats in the same lane.
For developers & AI agents
The Sibling Discount Calculator is also available as a free, unauthenticated JSON API — no API key, no sign-up, CORS enabled for all origins. Send a GET request with the parameters below and receive the computed result as JSON, including the source of the format or formula used. Invalid input returns HTTP 400 with a JSON { "error": "..." } body.
GET https://knwdle.com/api/tools/sibling-discount-calculator| Parameter | Required | Description |
|---|---|---|
fee1 | Yes | First child fee INR |
fee2 | No | Second child fee INR |
fee3 | No | Third child fee INR |
discount2Pct | No | Discount % for 2nd slot |
discount3Pct | No | Discount % for 3rd slot |
Request:
GET https://knwdle.com/api/tools/sibling-discount-calculator?fee1=80000&fee2=75000&fee3=0&discount2Pct=10&discount3Pct=15
Response:
{
"tool": "sibling-discount-calculator",
"input": {
"fee1": "80000",
"fee2": "75000",
"fee3": "0",
"discount2Pct": "10",
"discount3Pct": "15"
},
"result": {
"primaryLabel": "Combined fee payable",
"primaryValue": "₹1,47,500",
"steps": [
"Fees sorted highest → lowest (discount usually applies to younger / lower fee):",
"Slot 1: ₹80,000 − 0.0% = ₹80,000",
"Slot 2: ₹75,000 − 10.0% = ₹67,500",
"Combined payable = ₹1,47,500"
],
"extras": [
{
"label": "Gross before sibling discount",
"value": "₹1,55,000"
}
],
"tables": [
{
"headers": [
"Sibling",
"Gross fee",
"Discount",
"Net"
],
"rows": [
[
"Sibling slot 1",
"₹80,000",
"0.0%",
"₹80,000"
],
[
"Sibling slot 2",
"₹75,000",
"10.0%",
"₹67,500"
]
]
}
],
"listSections": []
},
"formula": "Sort fees desc; apply 0% / d2% / d3% to slots 1–3.",
"source": "Sort fees desc; apply 0% / d2% / d3% to slots 1–3."
}
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