Rule stacking: how pricing rules combine

What is rule stacking?

Rule stacking applies pricing adjustments in sequence, each acting on the result of the one before, so the final price can be traced step by step from the base price.

A rule stacking example

  • Base price: $100.
  • Demand rule, sales 30% above forecast, +5%: $105.
  • Inventory rule, stock is deep, −3%: $101.85.
  • Competitor rule, match the rival: $99.
  • Guardrails, floor $95 and ceiling $120: $99 passes.

Why pricing rule order matters

Percentages applied in sequence compound: +10% then −10% gives 99, not 100, and a competitor-match rule placed before a demand rule produces a different price from one placed after it. Rule precedence in pricing should be explicit, documented and the same every time, or the same inputs will not reliably give the same price.

Stacked discounts

Stacked discounts are the customer-facing version: a sale price plus a coupon plus a loyalty discount. Decide in advance which can combine, apply them in a fixed order and cap the total, or a stack of reasonable offers can sell an item below cost.

Replaying a price

Dynamic Pricing Engine stacks rules over demand, inventory depth, competitor position, time to expiry and customer segment in an order you can follow, then applies guardrails, and logs every decision rule by rule so anyone can see why a price moved.

Last reviewed 2026-11-01.

Related terms

  • Guardrail — A pricing guardrail is a hard limit applied after pricing logic runs, such as a minimum price, a maximum price or a cap on how far a price can move at once, which no rule is allowed to override.
  • Dynamic pricing — Dynamic pricing is adjusting prices in response to conditions such as demand, inventory levels, competitor prices or time remaining, instead of keeping one fixed price.
  • Price floor — In business pricing, a price floor is the lowest price an item is allowed to sell for, usually its cost plus the minimum margin the business needs, enforced as a minimum price rule that automated pricing cannot go below.

All glossary terms →