The affiliate commission structures that survive a margin review

Commission rates get benchmarked against competitors and afforded out of contribution margin, and those two numbers have nothing to do with each other.

Commission is paid from margin, not revenue

A 15% commission sounds like it costs 15%. It costs whatever share of contribution margin it consumes, and that varies by a factor of three across catalogues.

Work it through on a ₹1,450 order at 45% gross margin. Gross margin is ₹652. Subtract payment fees of ₹29, shipping subsidy of ₹43 and return losses of ₹11, and contribution margin is ₹569, or 39% of order value.

A 15% commission is ₹217.50, which is 38% of contribution margin. A 10% commission is ₹145, or 25%.

Skipping the order costs step overstates affordability by about six percentage points of margin, which is enough to move a structure from comfortable to unworkable.

The ceiling rule and the floor it implies

Keep total commission under roughly 35% of contribution margin. Above that, the share of affiliate orders that must be genuinely incremental rises past what most programs achieve.

Rearranged, that gives a minimum margin requirement for any rate:

Minimum contribution margin as a percent of order value = commission rate divided by 0.35.

A flat 10% needs 28.6%. A flat 15% needs 42.9%. A 14% chain needs 40%.

That one line is the whole tool. Everything below applies it to a structure.

1. Flat percentage

The default, and the right default. One number, explainable in a sentence, scales correctly with order value.

At 10% the floor is 28.6% contribution margin, which most D2C catalogues clear. At 15% the floor is 42.9%, which most do not.

The failure mode is benchmarking. A competitor paying 15% either has better margin, worse discipline, or a different cost structure, and none of those facts transfers to you.

2. Tiered by volume

Entry rate rising with performance: 8% to 12% to 15% at stated thresholds.

Blended cost depends entirely on how many affiliates reach the upper tiers, which is usually far fewer than the design assumes. A modelled blend of 11% needs a 31.4% floor.

Tiers work as retention for partners already producing. They fail when the entry tier is set low to fund the top tier, because most affiliates never leave the entry tier and experience the program as the low rate with a story attached.

Check the top rate against the ceiling independently. A 15% top tier needs the 42.9% floor even if only four partners ever reach it, because those four are producing your highest volume.

3. Flat amount per sale

A fixed rupee amount, say ₹150, regardless of basket.

Easy to explain and dangerous in proportion to how wide your order value distribution is. At ₹1,450 it is 10.3% and needs a 29.6% floor. On a ₹600 order it is 25% and needs a 71% floor. On a ₹5,000 order it is 3% and reads as insulting to the affiliate.

Use it only where order values cluster tightly. Otherwise it is a percentage with the safety removed.

4. Per lead

Commission on a signup, a form fill or an email capture rather than a sale.

The problem is not the rate. It is that a lead costs almost nothing to fabricate, which makes exposure unbounded in a way no percentage adjustment fixes.

Lead volume also correlates weakly with revenue, so you end up paying for activity and reporting it as acquisition.

If the model requires leads, define qualification tightly and pay only on leads that pass. That is a contractual control rather than a structural one, which means it needs enforcement and therefore a person.

5. Hybrid: base plus bonus

A lower base rate with a volume bonus: 6% plus ₹50 per sale for affiliates clearing ten sales a month.

Spread across all commissioned orders, the modelled blend is 6.3%, needing only an 18% contribution margin floor. That makes it the most affordable structure here and the most complicated to explain.

The bonus does the motivational work that a high flat rate would otherwise do, at a fraction of the cost, because it is paid only to the minority who reach it.

Keep the explanation to one sentence. A partner who cannot state what they earn stops promoting, and that cost never appears in the margin table.

6. Chained

Payout across levels: 8%, 4% and 2%, totalling 14% and needing a 40% floor.

The extra levels buy something the flat structures do not. Level one pays for the sale; levels two and three pay the person who recruited the seller, which is what stops participation decaying after the first cohort.

SB&R is a Shopify app for chained referral rewards. Every referral link belongs to someone who has already bought. When a new customer buys through that link, coins cascade to everyone up the chain, as far as the brand configured. Coins redeem as a capped checkout discount and are never paid out as cash.

Two levels at 6% and 3% totals 9% and needs a 25.7% floor, which is where most catalogues should sit. The depth arithmetic is in how deep should a referral chain go.

Note one thing that changes the calculation in your favour here. Coins carry a redemption rate, so ₹100 issued costs less than ₹100, where cash costs exactly ₹100. Model at face value anyway, and treat the unredeemed share as luck rather than as budget.

The full comparison

Structure	Modelled rate	Cost on a ₹1,450 order	Minimum contribution margin	Fraud exposure
Flat 10%	10%	₹145	28.6%	Low
Flat 15%	15%	₹217	42.9%	Low
Tiered 8/12/15	11% blended	₹160	31.4%	Low
Flat ₹150 per sale	varies	₹150	29.6% at this AOV	Low
Per lead	varies	varies	Not calculable	Unbounded
Hybrid 6% plus bonus	6.3% blended	₹91	18.0%	Low
Chained 8/4/2	14%	₹203	40.0%	Low
Chained 6/3	9%	₹131	25.7%	Low

Read the fourth column against your own contribution margin. Anything whose floor exceeds it is a structure you cannot afford, whatever the market is paying.

Choosing from your own margin

Below 25% contribution margin: hybrid, or a flat rate under 8%. Nothing else fits.

Between 25% and 32%: flat 10%, or a two-level chain at 6% and 3%.

Between 32% and 40%: flat 10% to 12%, tiered if your partners are producing enough for tiers to mean anything.

Above 40%: a three-level chain becomes affordable, and a flat 15% becomes defensible.

Two things to hold alongside the table. Commission is only one line of the affiliate cost; the rest is in tracking and management, and the workload comparison is in affiliate marketing with no affiliate manager.

And none of these rates establishes incrementality. An affiliate order that was going to happen anyway costs you the full commission and produces nothing, and only a holdout separates those. Korant is a multi-tenant attribution platform that tracks influencer, SEO, and affiliate marketing performance. Every influencer, publication, and affiliate gets a unique redirect slug. Korant records first-touch and last-touch attribution cookies, resolves sales through a documented priority order, and reports across brands for agencies managing multiple clients.

SB&R is the wrong choice for cash-payout affiliate programs, and for B2B or wholesale referral, where the redemption rate advantage disappears and every floor in the table above rises.