How to Start an Affiliate Program for Your Online Store

Affiliate marketing is the closest thing to free advertising. Someone else promotes your product, sends you a customer, and you only pay them when a sale happens. No upfront cost. No wasted ad spend. Pure performance-based marketing.

The average e-commerce affiliate program generates 15-20% of total revenue. For a store doing $10,000/month, that's $1,500-$2,000 in sales you didn't have to create demand for.

Here's how to set one up the right way.

What affiliate marketing actually is

An affiliate is someone who promotes your products using a unique tracking link. When a customer clicks that link and buys, the affiliate earns a commission. You get a sale. They get a cut. The customer pays the same price.

Example: A fitness blogger writes a review of your resistance bands. They include their affiliate link. A reader clicks it, lands on your store, and buys a $34.99 set. You pay the blogger $5.25 (15% commission). You keep $29.74 minus your product and shipping costs. The blogger earned money from content they were writing anyway.

This works because affiliates have audiences that trust them. That trust transfers to your product in ways that paid ads can't replicate.

When to start an affiliate program

Too early: You just launched and have zero sales. Affiliates won't promote a store with no reviews, no track record, and no proof the product is good. Get your first 50 sales and 10+ reviews before launching an affiliate program.

Just right: You have a working store with consistent sales (20+/month), good reviews (4+ stars), and a conversion rate above 1.5%. Affiliates need to know their traffic will actually convert.

The sweet spot: You're spending on paid ads and want to diversify. Affiliate marketing hedges against rising ad costs and builds a sales channel you don't fully control but also don't fully pay for upfront.

Commission structures that work

Percentage-based (most common)

Pay affiliates a percentage of each sale they generate.

• Physical products: 10-20% is standard. Below 10% doesn't motivate anyone. Above 20% cuts too deep into your margins.
• Digital products: 20-40% because your marginal cost is near zero.
• Subscriptions: 15-25% of the first payment, or a smaller recurring commission (5-10% monthly).

Our recommendation: Start at 15% for physical products. This is competitive enough to attract affiliates and sustainable for your margins. You can increase it later for top performers.

Flat-rate commissions

Pay a fixed dollar amount per sale regardless of order size.

• When it works: When your products are similar in price. If everything in your store is $25-$35, a $5 flat commission is simpler than calculating percentages.
• When it doesn't: When you sell items ranging from $10 to $200. A $5 commission on a $200 sale is insulting.

Tiered commissions

Increase the commission rate as affiliates hit volume milestones.

• 1-10 sales/month: 12% commission
• 11-50 sales/month: 15% commission
• 51+ sales/month: 20% commission

This rewards your best affiliates and motivates everyone to push harder. Set this up from the start — it's a powerful recruitment pitch.

How to recruit affiliates

1. Your existing customers (best starting point)

Your happiest customers are your best potential affiliates. They already love your product and can speak authentically about it. Send an email to customers who've left 5-star reviews:

"Love your review! Want to earn 15% commission every time someone buys through your link? Join our affiliate program: [link]"

Expect 5-10% of contacted customers to sign up. If you email 100 happy customers, you'll get 5-10 affiliates who genuinely love your product.

2. Niche bloggers and content creators

Search for "[your niche] blog" and "[your niche] YouTube review." Find creators with 1,000-50,000 followers — they're big enough to drive sales but small enough to respond to your outreach.

The pitch: "I saw your [specific content piece] and thought our [product] would be a great fit for your audience. We offer 15% commission with 60-day cookie tracking. Want me to send a free sample?"

Send 50 outreach emails. Expect 5-8 responses and 3-5 active affiliates. That's normal.

3. Social media micro-influencers

Instagram and TikTok creators with 5,000-50,000 followers in your niche are goldmines. They have engaged audiences and are actively looking for monetization opportunities.

Search relevant hashtags, find creators who already post about products like yours, and DM them with your affiliate offer. Include a free product — it costs you $10-$20 and dramatically increases acceptance rates.

4. Affiliate networks and directories

List your program on affiliate directories like ShareASale or AvantLink. Affiliates actively browse these looking for new programs to join. The downside is a setup fee and monthly minimum, so wait until you're ready to invest.

Managing payouts

Payment schedule

Monthly payouts on the 15th for the previous month's commissions. This gives you time to account for returns and cancellations. If someone gets a refund, deduct the commission from the affiliate's next payout.

Payment methods

• PayPal: Easiest. Most affiliates prefer it. Send payouts in bulk.
• Direct deposit/ACH: Better for high-volume affiliates. Lower fees than PayPal on large amounts.
• Store credit: Offer 20% commission in store credit vs 15% in cash. Some affiliates prefer this, and it keeps money in your ecosystem.

Minimum payout threshold

Set a $25-$50 minimum payout. This prevents you from processing $3 payments and reduces admin work. Most affiliate platforms handle this automatically.

Recommended platforms

GoAffPro — Best for Shopify stores

GoAffPro integrates directly with Shopify in 5 minutes. The free plan supports unlimited affiliates and handles tracking, link generation, and payout management.

Price: Free plan available, Pro at $24/month for advanced features (tiered commissions, multi-level marketing, custom portals).

Best for: Shopify stores that want to launch fast with minimal setup.

Tapfiliate — Best for multi-platform stores

Tapfiliate works with Shopify, WooCommerce, BigCommerce, and custom platforms. It's more powerful than GoAffPro but takes longer to set up.

Price: $89/month (Essential), $149/month (Pro). 14-day free trial.

Best for: Stores on multiple platforms or with complex commission structures.

ReferralCandy — Best for referral + affiliate hybrid

ReferralCandy combines customer referral programs with affiliate features. Customers earn rewards for referring friends, and you can manage dedicated affiliates in the same dashboard.

Price: $59/month + percentage-based commission fee. 14-day free trial.

Best for: Stores that want both a customer referral program and an affiliate program in one tool.

Setting up your program: the checklist

Week 1: Foundation

• Choose your platform (GoAffPro for Shopify, Tapfiliate for others)
• Set your commission rate (start at 15%)
• Write your affiliate terms of service
• Create a landing page explaining your program

Week 2: Assets

• Create promotional assets affiliates can use (product images, banner ads, email templates)
• Write 3-5 sample social media posts affiliates can customize
• Set up your affiliate dashboard and test the signup flow

Week 3: Recruitment

• Email your top 50 customers
• Reach out to 20 niche bloggers
• DM 20 relevant social media creators
• List on 2-3 affiliate directories

Week 4: Optimize

• Check which affiliates are generating clicks vs sales
• Send your top 3 affiliates exclusive discount codes
• Create a monthly affiliate newsletter with new products and promotions
• Review your commission structure based on early data

Tracking and attribution

Cookie duration

Set your cookie window to 60 days minimum. This means if someone clicks an affiliate link but doesn't buy until 45 days later, the affiliate still gets credit. Shorter windows (7-14 days) are common but unfair — most purchase decisions take 2-4 weeks.

Last-click attribution

Most affiliate platforms use last-click — the last affiliate link clicked before purchase gets the commission. This is the simplest model and the industry standard. Don't overcomplicate it.

Fraud prevention

Watch for affiliates using coupon sites to claim commissions on sales that would have happened anyway. Check your affiliate reports monthly for suspicious patterns — high clicks with low conversions, or commissions that coincide with coupon code usage from other channels.

The bottom line

An affiliate program is one of the highest-ROI marketing channels because you only pay for results. Start small — 5-10 affiliates from your customer base — and scale as you learn what works.

Learn more about setting up affiliate and referral marketing in our Affiliate and Referral Marketing guide.

Ready to build every growth channel for your store? Start the free ecom.biz course — affiliate marketing is step 22 of 26.