What is Stairstep Pricing?
Written by Arnon Shimoni
✓ Expert
Last updated on:
What is stairstep pricing?
Stairstep pricing charges a flat fee for each predefined usage band. Instead of multiplying units by a rate, the invoice asks one question: which step is the customer standing on this period? Everyone within a band pays the same amount, whether they're at the bottom of it or the top.
It's the structure behind classic email marketing pricing (Mailchimp's subscriber-count bands are the canonical example) and it remains popular anywhere buyers want a usage-linked price without a metered invoice.
How does stairstep pricing work? A worked example
A messaging platform prices by monthly message volume:
Step | Messages per month | Flat fee |
|---|---|---|
1 | Up to 10,000 | $100 |
2 | 10,001 to 50,000 | $400 |
3 | 50,001 to 200,000 | $1,200 |
A customer sending 30,000 messages pays $400. So does a customer sending 49,000. Compare the same customer under graduated tiered usage-based pricing at, say, $0.012 per message in step 1 territory and $0.009 beyond: 10,000 × $0.012 + 20,000 × $0.009 = $300. The stairstep customer at 30,000 messages pays more, and the one at 49,000 pays less, than their metered equivalent. The steps average out the band.
That averaging is the whole design. The vendor gives up per-unit precision and buys simplicity: no metered line items, no variable invoices, one number per month.
When does stairstep pricing make sense?
Situation | Why stairstep fits |
|---|---|
Buyers need budget-approvable prices | A flat fee per band survives procurement; a variable meter often doesn't |
Usage is a proxy for company size | Subscriber counts, employee counts, monthly visitors: slow-moving numbers that step up as the customer grows |
Per-unit invoicing would look petty | Nobody wants a line item for message 30,001 |
Self-serve upgrades | "You've outgrown your plan" is an easier upsell than a rate negotiation |
The model fits worst when usage is spiky. A customer who bursts into step 3 for one month and drops back resents paying the step 3 fee, which is exactly the problem sticky stairstep pricing was invented to formalize (and that flexible downgrades are meant to soften).
What are the design decisions in a stairstep model?
The step boundaries carry all the pricing intelligence. Three questions decide whether the model works:
First, where do the steps sit? Steps should land where customer value visibly changes, not at round numbers picked in a pricing meeting. If most customers cluster at 9,500 messages, the 10,000 boundary is a wall, and they'll throttle usage to stay under it.
Second, what happens at the boundary? Customers need warning before they cross (usage alerts at 80% and 95% of the band are standard), and the crossing itself needs a rule: reprice immediately, at the next cycle, or only after 2 consecutive months above the line. Whatever the rule, the billing system has to apply it automatically. See proration for the mid-cycle mechanics.
Third, do customers step down? If usage drops, does the fee follow? Letting the price fall keeps the model fair. Holding it makes revenue stickier at the cost of goodwill, and that variant has its own name: sticky stairstep pricing.
Even without per-unit rates, stairstep still requires real usage metering: the meter decides which step the customer is on, and disputes about the fee are disputes about the count. Solvimon supports stairstep as a native price structure alongside graduated and volume tiers. See flexible pricing.
FAQ
What's the difference between stairstep and tiered pricing?
Tiered pricing is the umbrella: prices organized into bands. Stairstep is the variant that charges a flat fee per band instead of applying per-unit rates within bands.
Is stairstep pricing usage-based?
Yes, in the sense that the fee is determined by measured usage. But the invoice is flat, which is why it appeals to buyers who won't accept variable bills.
How many steps should there be?
Enough that no customer sits absurdly far from their band's fair price, few enough that the pricing page still fits on a screen. In practice, 4 to 7 for self-serve products.
What happens when a customer keeps bouncing between 2 steps?
Pick a smoothing rule up front: bill on the higher step only after consecutive months above the boundary, or bill on a trailing average. Deciding this after the first angry email is more expensive.
Related
Sticky stairstep pricing: the no-downgrade variant
Tiered pricing: the umbrella band structure
Tiered usage-based pricing: per-unit rates within bands
Usage-based pricing: the hub term
Ready for billing v2?
Solvimon is monetization infrastructure for companies that have outgrown billing v1. One system, entire lifecycle, built by the team that did this at Adyen.
