A parent with three kids asks the question every camp operator knows: "Is there a discount for siblings?"
Say no and you may lose a three-seat booking to the camp down the road. Say yes and — if you're applying discounts by hand across a register full of families — you've just signed up for a season of arithmetic errors, inconsistent pricing, and the occasional awkward "actually, you charged us full price" conversation.
Sibling discounts are one of the highest-leverage policies a family-heavy club or camp can run. Here's how to design one that's fair, profitable, and — crucially — automatic.
Why sibling discounts are worth the margin
The economics are better than they look. A second child booking is nearly pure contribution margin:
- The marginal cost of one more camper is small (a share of coach time and materials — the venue, admin, and fixed costs are already paid)
- A family booking two or three children is 2–3× the revenue per relationship, and multi-child families are your best retention: they're invested in your venue, not shopping around
- The alternative to a discount isn't full price — it's often zero: families split weeks across providers or skip camp entirely
A 10% second-child discount that fills a seat beats 100% of an empty one.
Designing the policy: four decisions
1. Discount shape: percentage or fixed? Percentage (10% off) scales naturally with price and is the norm. Fixed amounts ($10 off per additional child) are easier to advertise. Pick one and stay consistent.
2. Who counts as the trigger? The cleanest rule: the discount applies per additional child from the same family, on top of the first full-price booking. Decide explicitly:
- Does it stack across camp weeks? (Usually yes — per booking, per additional child)
- Is there a cap? (Some camps cap at "up to 3 children" to protect margin)
- Do member families get a different rate? (Member pricing and sibling discounts are separate rules — don't blur them)
3. How much? Market range is 10–15% for the second child, sometimes 20% for the third+. Check three local competitors and position yourself deliberately — slightly better than the average is enough.
4. What's the message? Framing matters. "10% sibling discount" is a feature. "The more kids in camp, the more you save" is marketing. Put the policy in writing — a one-page policy prevents 90% of discount disputes. We've published a sibling discount policy template you can adapt.
The real problem: applying it consistently
Here's where camps bleed. Manual discounting means:
- Inconsistency: the second child gets 10% in July's spreadsheet and full price in August's
- Errors: a 10% discount typed as 10 dollars off, or applied to the first child too
- Disputes: "The website said siblings get a discount" — and someone has to go check, manually, per family
- Leakage: discounts given as favors that were never policy
The fix isn't more careful arithmetic. It's making the discount structural: a rule the system applies at booking time, not a judgment call at invoice time.
What automated discounting looks like
With rules-based discounting (as in Club Term):
- You define the rule once: type (percentage or fixed), value, scope (all programs, or holiday clubs only), and whether it requires membership
- When a parent books, the system sees the family's linked children and applies the discount automatically to the generated invoice
- The discount shows on the invoice, so parents see the savings — which is half the retention value
- Member-only rates trigger off the family's membership flag, so member pricing never leaks to non-members
No spreadsheets, no "I think the Smiths got it," no season-end reconciliation of who got what. The rule is the rule.
Rolling it out
- Write the one-page policy (start from our template)
- Announce it to existing families before the next registration window — it's a positive message
- Set the rule in your system and test it with a two-child booking before opening registration
- Check the first week's invoices — then never think about it again
Automate your discounts → — and pair this with our parent payment reminder templates to keep the whole money side of camp on autopilot.