How to Start an Affiliate Program: A Step-by-Step Launch Plan

To start an affiliate program, first confirm that your margins and customer lifetime value can fund commissions. Then choose a commission model and cookie window, pick affiliate software or a network, publish an affiliate agreement with disclosure rules, and set up server-to-server tracking. Only then recruit, onboard and activate your first partners, and measure EPC, conversion rate and approval rate from the first week.

Most of the work happens before the first affiliate signs up. The order matters: a commission you can't afford, or tracking that loses conversions, is far harder to fix once partners depend on it. This guide stays tool-neutral; if you are already comparing platforms, start with our overview of affiliate tracking software.

The launch plan at a glance#

Readiness check: margins, LTV and product-market fit#

Affiliates are paid out of gross profit, so the first question is how much gross profit a referred customer produces. Customer lifetime value (LTV) over a realistic horizon, multiplied by your gross margin, sets the ceiling for any commission you offer. Everything else in the program is built on that number.

Work out the maximum commission you can afford#

Pick a payback horizon you can live with, usually the period for which you have reliable retention data. Then decide what share of that gross profit you are willing to spend on acquisition. The figures below are an example with invented round numbers:

12-month revenue per customer:        $400
Gross margin:                          70%
12-month gross profit:                 $400 × 0.70 = $280
Share you will spend on acquisition:   35%
Maximum CPA:                           $280 × 0.35 = $98
Equivalent revenue-share ceiling:      $98 ÷ $400 = 24.5% of 12-month revenue

Then stress-test it. Halve retention and rerun the numbers. If the maximum CPA falls below what partners in your vertical expect, a fixed CPA is risky, and a revenue share, which moves with customer value, is the safer starting point while you collect data.

Commissions are not the only cost. Software fees, payment fees, fraud losses and the time of whoever manages the program all come out of the same margin, so leave headroom.

Check product-market fit before you pay for distribution#

Affiliates amplify a funnel that already converts; they rarely fix one that doesn't. Before launch, look at four signals:

• Conversion rate of cold traffic. If non-brand paid search or social traffic converts poorly, affiliate traffic usually will too, and partners will drop you after a test.
• Refunds and chargebacks. Every reversed sale is a reversed commission. Affiliates judge programs by how much of their work gets approved.
• Retention. For subscriptions, iGaming and trading products, retention after the first few months decides whether revenue-share partners earn anything.
• Checkout friction. Every extra step between the click and the conversion lowers the partner's earnings per click.

Make sure someone owns the program#

A program needs an owner who approves applications, answers partners, reviews conversions and sends payments on schedule. Affiliates stop promoting brands that reply late or pay late. Decide who that is before launch, and set a commission budget for the first 90 days.

Choose a commission model and cookie window#

The commission model decides who carries the risk of a bad customer. Fixed payouts protect the affiliate; percentage payouts protect the brand.

Our CPA vs RevShare vs hybrid comparison runs the payout math for each model over 6 and 12 months. For rate levels, our guide to affiliate commission rates collects published rates by vertical and shows how to test them.

Write down qualification and approval rules#

A rate means little without the rules around it. Before launch, decide:

• Qualifying event and minimum value, for example "first order of at least $30" or "verified account plus first deposit."
• Which purchases pay: first purchase only, every purchase, or recurring payments for a set number of months.
• Hold period: how long commissions stay pending before approval, typically long enough for your refund window to close.
• Reversal reasons: refunds, chargebacks, duplicates, fraud and breaches of the agreement.

Pick a cookie window that matches your sales cycle#

The cookie duration is how long after a click a conversion still credits the affiliate. Match it to how long your customers take to decide: an impulse purchase may convert within a day, while B2B software can take months. As of October 2026, HubSpot's affiliate program advertises a 180-day cookie window, and MassPartner campaigns default to 30 days.

A window that is too short underpays content partners whose readers research before buying. One that is too long pays for conversions the affiliate barely influenced. Our guide to affiliate cookie duration covers the trade-offs in more detail.

Browser limits matter as well. Safari's Intelligent Tracking Prevention caps persistent cookies set through document.cookie at seven days (WebKit, ITP 2.1), so a 60-day window that relies only on a script-set cookie can shrink to a week for Safari users. That is one reason to report conversions server to server, as described below.

Software vs network vs in-house build#

There are three ways to run the program, and they differ mainly in who finds the affiliates and who owns the data.

A network buys you reach, and its fees grow with your sales. Software costs roughly the same whether partners sell a little or a lot, but recruitment is your job. Building your own means also building attribution, fraud screening, reporting, payouts and tax-form collection, and maintaining them as browsers and regulations change.

We compare the cost models with worked numbers in affiliate network vs affiliate software. Many brands start on software and add a network later for reach, or the reverse.

Legal: agreement, disclosures and regulated verticals#

Not legal advice. Advertising, privacy, gambling and financial-promotion rules differ by country. Have a qualified lawyer review your terms before you launch.

The affiliate agreement#

Your affiliate agreement is the only document that lets you withhold or reverse commissions, so write it before you approve anyone. At a minimum it should define the qualifying action, commission and hold period, payment terms, prohibited activities (brand bidding, cookie stuffing, incentivized traffic, spam), disclosure duties, data protection and termination. Our affiliate agreement template lists 15 clauses with a copy-ready skeleton.

Disclosure rules for affiliates#

In the US, affiliates must disclose their financial relationship with you, and you are expected to supervise them. The FTC's Endorsement Guides FAQ says advertisers need "reasonable programs in place to train and monitor members of their network." The same FAQ says a disclosure should sit close to the recommendation, and that a bare "affiliate link" label may not be understood.

Put the disclosure rules in your agreement and your welcome kit, then spot-check partner content. For search, Google asks sites to mark advertisements and paid placements with rel="sponsored", with nofollow still accepted (Google Search Central); tell affiliates which you expect.

Privacy and consent#

Tracking links and scripts process personal data such as IP addresses and click IDs. If you sell into the EU or UK, check with counsel whether your tracking needs consent and how your consent tool treats it. Make sure that tool doesn't strip click IDs from landing URLs, or conversions will go unattributed.

Regulated verticals#

Gambling, crypto and financial products carry extra duties. The UK Gambling Commission's guidance on affiliates and third parties says licensees must take responsibility for the third parties they contract with. Restrict promotion to markets where you are licensed, require responsible-gambling messaging, ban "risk-free" claims, and never promise affiliates or players earnings.

Tracking setup: links, script and S2S postbacks#

Tracking has to work before the first partner sends a click. A reliable setup combines tracking links, a first-party script and server-to-server (S2S) tracking:

1. Tracking links with a unique click ID. Every click gets an ID that ties it to the affiliate, campaign and any sub-IDs the affiliate passes.
2. Capture the click ID on the landing page. A tracking script stores it in a first-party cookie; check that redirects and consent tools don't drop the query string.
3. Store it server-side. Save the click ID with the user or order record, so conversions that happen days later, or in a payment webhook, can still be attributed.
4. Fire a postback when the conversion is confirmed. Send it after the order is paid or the deposit clears, not when a button is clicked.
5. Send separate events. A lead, a sale and a deposit should be different events, with amount, currency and order ID, so the right commission rule applies.
6. Report reversals. Refunds and chargebacks should update the conversion before the hold period ends.
7. Test end to end. Click a live tracking link, complete a test conversion and confirm it appears with the right amount.

On MassPartner, the postback goes to a brand-specific endpoint, and the brand dashboard includes an installation tester:

https://masspartner.com/api/postback/YOUR_BRAND_ID?click_id=CLICK_ID&event=sale&amount=120.00&currency=USD&order_id=ORDER_ID&user_id=CUSTOMER_ID

Whichever platform you use, the logic is the same. Our page on S2S postback tracking covers parameters, testing and the common reasons conversions go missing.

Two more decisions belong here. Let affiliates pass their own sub-IDs, so they can see which placements convert. And decide which fraud checks run on every click, such as datacenter IP detection, click-velocity limits and country rules, before traffic arrives rather than after the first bad week.

Recruiting your first affiliates#

Start with people who already know your product, then widen the net. Warm sources need less convincing, because they already understand what you sell:

• Existing customers and users, especially those who already write or post about your category.
• Integration partners, agencies and consultants who recommend tools or services to their clients.
• Creators and publishers already mentioning you, found through brand-mention searches.
• Sites ranking for your category keywords: reviews, comparisons and "best X" lists.
• Affiliate marketplaces and directories, where publishers browse programs by vertical.

Aim for fit, not volume. An example target for a first cohort is 20 to 30 hand-picked partners whose audience matches your customer, rather than hundreds of sign-ups that never send a click.

Your program page does part of the recruiting for you. Publish the commission, cookie window, hold period, payout schedule and methods, allowed and banned traffic sources, and the markets you accept. Our guide on how to recruit affiliates covers 15 channels, outreach templates and screening.

Onboarding and activation#

Approval is not activation. An affiliate who never sends a click costs nothing, but also earns you nothing, and a long tail of inactive accounts hides the partners who need help. Treat the first 30 days as part of the launch.

What a welcome kit should include#

• Tracking links, and instructions for sub-IDs and deep links.
• Creatives: banners in standard sizes, logos, product images and approved copy.
• The rules in plain language: disclosure wording, banned keywords, restricted markets.
• Commission, hold period, payout schedule and the tax and payment details you need before the first payout.
• One named contact and a promised response time.

An example 30-day activation plan#

Small, time-boxed incentives can speed this up, for example a bonus on a partner's first approved conversion. Keep incentives in writing and tie them to approved, not pending, conversions.

Measuring: EPC, conversion rate and approval rate#

Three metrics tell you whether partners can make money with you and whether you can afford them. Earnings per click (EPC) is what affiliates compare across programs; conversion rate shows funnel quality; approval rate shows traffic quality and how fair your reviews look from the outside.

EPC              = total commissions ÷ clicks
Conversion rate  = conversions ÷ clicks
Approval rate    = approved conversions ÷ all conversions
Activation rate  = affiliates with at least one conversion ÷ approved affiliates

Example with invented round numbers: 2,000 clicks produce 40 conversions, of which 34 are approved, earning partners $1,700. That is a 2% conversion rate, an 85% approval rate and an EPC of $0.85.

Review partner-level numbers weekly, the program monthly and commission levels quarterly. Segment everything by affiliate, campaign, country and sub-ID; program-wide averages hide both your best partners and your fraud.

A 90-day launch timeline (example)#

Launch your affiliate program on MassPartner#

MassPartner gives brands CPA, RevShare and hybrid campaigns, S2S postbacks with an installation tester, fraud checks on every click and a branded affiliate portal. Every plan includes a 7-day free trial; compare plans on the pricing page.