Affiliate Marketing Terms Explained: A Glossary For Beginners – The Affiliate Guy Matt McWilliams

Affiliate marketing has its own vocabulary, and most of it gets explained to you exactly zero times. Here’s the plain-English version of the terms that show up in your dashboard, your program emails, and your commission statement.

Affiliate marketing terms are the vocabulary you need to read a dashboard and understand a paycheck. The core ones: EPC (earnings per click), cookie duration (how long you get credit after someone clicks), last-click attribution (who gets paid when several affiliates touch the same sale), and chargeback (a commission clawed back after a refund). Learn those four and the rest gets easier.

I’ve been in this business since 2005, and I still remember the first affiliate program email I got that said something like “EPC is $1.87, 60-day cookie, last-click, net-30.” I nodded along like I knew what any of that meant. I did not. Nobody hands you a decoder ring. You pick it up over a few years of losing money to things you didn’t understand.

So let’s speed that up. Below are the terms that come up most often, grouped by where you’ll run into them. Each one gets a definition, then a line on how it hits your bank account. Because a definition you can’t use is trivia.

What are the basic affiliate marketing terms every beginner needs?

Four words describe the whole business model: affiliate, merchant, offer, and network. An affiliate (you) sends people to a merchant’s offer using a tracking link. When someone buys, the merchant pays a commission. A network is the middleman platform that handles the tracking and the payments.

Affiliate. The person promoting someone else’s product for a cut of the sale. Also called a partner, publisher, or JV partner depending on who’s talking. They all mean you.

Merchant. The company that owns the product. You’ll also see “advertiser,” “vendor,” and “brand.” Same thing.

Offer. The specific product or promotion you’re sending people to. One merchant can run a dozen offers with different commissions on each, which is why “I’m an affiliate for Company X” tells you almost nothing about what you’ll earn.

Affiliate network. A platform like ShareASale, Impact, CJ, or PartnerStack that hosts many merchants, tracks clicks and sales, and cuts your check. The alternative is an in-house program run on the merchant’s own software. Both work. They pay differently and they treat you differently, which I break down in affiliate network vs. in-house program.

Affiliate manager. The human running the program. This is the person who approves you, sends you the promo assets, and decides whether to bump your commission when you ask. Be nice to them. I was one for 15 years and I can tell you exactly which affiliates got favors.

Once you know what the words mean, the next question is which programs deserve your traffic. Not all offers with a 50% commission are worth promoting, and some 8% offers will out-earn them. The Affiliate Marketing QuickStart Guide walks through how to pick programs and get accepted into them, with copy-and-paste application emails included.

What do the numbers in my affiliate dashboard mean?

Your dashboard shows five numbers that matter: clicks, conversion rate, EPC, average order value, and reversal rate. Together they tell you whether an offer is worth your audience’s attention.

EPC (earnings per click). Total commissions divided by total clicks. If you sent 500 clicks and earned $940, your EPC is $1.88. This is the single most useful number in affiliate marketing because it lets you compare two totally different offers on the same scale. A $12 ebook with a 9% conversion rate can beat a $2,000 course that converts at 0.3%. I wrote a full breakdown of the math in what is EPC in affiliate marketing.

Network EPC vs. your EPC. Programs advertise a network EPC, which is the average across all affiliates. That average includes people with garbage traffic and people with insanely warm audiences. Your EPC will differ. Treat the published number as a rough signal, not a promise.

Conversion rate. The percentage of clicks that turn into sales. A 2% conversion rate means 2 of every 100 clickers bought. Program-wide conversion rates get skewed by whoever’s sending the most traffic, which is why I don’t lean on them much. More on that in what is a good affiliate program conversion rate.

AOV (average order value). The average dollar amount per sale. Matters because a 10% commission on a $400 average order beats 40% on a $30 order.

Reversal rate (or refund rate). The percentage of your sales that get refunded and clawed back. A program with a 25% reversal rate is quietly cutting your real EPC by a quarter. Ask about it before you promote. Most managers will tell you.

Impressions. How many times a banner or link was displayed. Mostly useless for the way I recommend you do affiliate marketing, which involves recommending things to people who trust you rather than plastering banners around.

Which affiliate marketing terms decide whether you actually get paid?

Cookie duration, attribution model, chargebacks, payment threshold, and payment terms are the five that determine whether a sale you influenced turns into money in your account. This is the group beginners ignore and then get burned by.

Cookie duration (cookie length). The window of time after someone clicks your link during which you still get credit for a purchase. A 30-day cookie means they can click today, buy on day 29, and you still earn. A 24-hour cookie means they’d better decide fast. Amazon’s is famously 24 hours. Some programs run 90 days or lifetime. I’ve written about what the number should look like in what is a good affiliate cookie duration.

Last-click attribution. The most common model. Whoever’s link the buyer clicked most recently gets the commission, even if three other affiliates introduced them to the product first. Brutal, but it’s the standard. First-click attribution gives credit to whoever brought them in originally. Multi-touch splits the commission. Roughly 85% of programs I’ve seen use last-click.

Chargeback (or reversal, or clawback). A commission taken back after the customer refunds or disputes the charge. If a program has a 60-day money-back guarantee, your March commissions aren’t safe until June.

Payment threshold (minimum payout). The balance you have to hit before they’ll send money. Usually $50 or $100. If you earn $23 in a program with a $100 threshold, that $23 sits there until you earn $77 more.

Net-30, net-45, net-60. The delay between the end of a period and when they pay you. Net-30 on a monthly cycle means January’s commissions arrive around March 1. Add a 30-day refund window on top and you’re waiting 60+ days for money you earned.

Locked or pending vs. approved. Pending commissions haven’t cleared the refund window. Approved ones are yours. Look at approved, not pending, when you’re deciding whether an offer performed.

The payment terms above are one of the biggest reasons new affiliates quit. They earn $40, wait 90 days, and decide the whole thing is a scam. It isn’t, but you do need a promotion plan that generates enough volume to clear thresholds. My free Promotion Checklist Template lays out the full plan across email and social so a promo produces real numbers instead of a trickle.

How do affiliate commission structures work?

Commission structures come in five common shapes: flat rate, percentage, recurring, tiered, and hybrid. The structure changes your income more than the headline percentage does.

Percentage commission. A cut of the sale price. 30% of a $297 course is $89.10. Standard for digital products, where 30% to 50% is normal.

Flat rate (or bounty). A fixed dollar amount per sale or per lead regardless of price. $75 per signup, for example. Common in SaaS and finance.

Recurring commission. You get paid every month the customer stays subscribed. 20% recurring on a $49/month tool is $9.80 a month, which sounds small until you have 200 active customers and you’re collecting $1,960 a month for work you did two years ago. This is how affiliates build income that doesn’t reset to zero every January.

Tiered commission. The rate climbs as you sell more. 25% on your first 10 sales, 35% after that. Programs use this to motivate you. Use it right back by planning promos that push you over the line.

Hybrid deal. A combination, usually a flat fee plus a percentage. A merchant might pay $500 for a dedicated email plus 20% of resulting sales. Bigger affiliates negotiate these constantly. Smaller ones don’t ask. You should ask, and how to negotiate higher affiliate commissions covers how.

CPS, CPL, CPA. Cost per sale, cost per lead, cost per action. These are the merchant’s terms for what triggers your payment. CPS pays on purchase. CPL pays when someone opts in. CPA is the umbrella term.

High ticket. Loosely, any offer paying $500+ per sale. Fewer conversions, bigger checks, longer sales cycles. Worth a look once you have an audience that trusts you, which I cover in how to get started with high ticket affiliate marketing.

The right structure depends on what you’re promoting and who’s reading. What is a good affiliate commission rate gets into the benchmarks by category.

What are the tracking and link terms in affiliate marketing?

Your affiliate link carries an ID that tells the merchant’s software who to pay. Everything in this group describes how that ID travels and where it can break.

Affiliate link (tracking link). A URL with your unique ID attached. Click it, a cookie drops, the merchant knows the sale came from you.

Sub-ID (SID, sub-tracking). An extra tag you add to your own link so you can tell which placement produced the sale. Same offer, but you tag one link “email3” and another “youtube-review” and now you know where your money comes from. Almost nobody uses these. The affiliates earning six figures all do.

Deep link. A link that goes to a specific page instead of the homepage. Sending someone to a product page instead of a homepage regularly doubles conversion, because you removed the step where they have to go find the thing you told them about.

Link cloaking. Turning an ugly tracking URL into something like yoursite.com/recommends/tool. Cleaner, easier to remember, and it survives when the merchant changes networks.

Cookie stuffing. Dropping tracking cookies on people who never clicked your link. It’s fraud, it’ll get you banned, and it’s the reason some programs are paranoid about approving new affiliates.

Postback (server-to-server tracking). Tracking that doesn’t rely on browser cookies. More programs are moving this way because browsers keep killing third-party cookies. If a merchant offers it, take it. How affiliate tracking works explains the plumbing.

Coupon code tracking. Some programs assign you a discount code that credits you when it’s used, no click required. Useful on podcasts and video where people can’t click.

Sub-IDs and deep links do the most for one specific format: the product review post. That’s where a beginner’s traffic turns into an actual monthly income. My free Affiliate Review Post Guide shows how to structure a review that ranks on Google and converts, and I update it every six months as search changes.

What terms will my affiliate manager use that nobody explains?

Program emails come loaded with launch jargon. Six terms cover most of it.

Launch (or promo window). A limited-time push, usually 5 to 14 days, where the cart opens and closes. Most of a program’s annual revenue often happens here.

Evergreen offer. Available year-round, no deadline. Lower urgency, steadier income.

Swipe copy. Pre-written emails and social posts the manager gives you. Use them as raw material. Sending swipe copy word-for-word to your list is how you get 0.4% click rates. Rewrite it in your voice.

Leaderboard and contest. A ranking of affiliates by sales during a launch, usually with prizes. Small affiliates win these more often than you’d think, because prizes often go to categories like “most improved” or “highest conversion rate.”

Activation. The manager’s term for getting signed-up affiliates to promote for the first time. If you get an email that seems weirdly eager to help you make one sale, that’s why.

JV (joint venture). Usually means a bigger partner relationship with negotiated terms rather than a standard program signup.

Warm-up. The content you publish before a promo to get your audience interested in the topic. Skipping it is one of the affiliate marketing mistakes that kill your commissions.

Which affiliate marketing terms should you learn first?

Start with four: EPC, cookie duration, attribution model, and reversal rate. Those four tell you whether an offer will pay you and whether the money will stick.

Everything else you’ll absorb by doing. You’ll learn what a sub-ID is the first time you can’t figure out which email drove sales. You’ll learn about net-60 the first time you check your bank account expecting money that isn’t there.

Before you promote anything, ask the affiliate manager these four questions: What’s the current EPC? What’s the cookie duration and attribution model? What’s the refund rate? When do you pay and what’s the threshold? Any decent manager answers all four in one reply. A manager who dodges them is telling you something.

Then pick offers on fit rather than commission percentage. The highest-paying program in your niche is worthless if your audience doesn’t want the thing. How to choose affiliate products that actually convert and how to choose an affiliate program to promote both cover the filter I use.

Knowing the vocabulary is step one. Turning it into income is step two, and that part looks different than most people expect. My free two-hour masterclass How I Currently Make $3,874 a Week Without Creating a Single Product walks through how I monetize from day one and where the commissions come from. It includes my report on making $10,565 in passive income in a single month.

Affiliate marketing terms FAQ

What does EPC mean in affiliate marketing?

EPC stands for earnings per click. Divide your total commissions by your total clicks. If you earned $940 from 500 clicks, your EPC is $1.88. It’s the fastest way to compare two offers with different prices and commission rates, because it normalizes them to the same unit: what one click is worth to you.

What is a good cookie duration for an affiliate program?

Thirty days works for most digital products and covers the normal decision window. Sixty to 90 days is generous and common for higher-priced offers where people take longer to decide. Twenty-four hours, like Amazon’s, is short but survivable because Amazon converts unusually well. Anything under 24 hours should make you ask why.

What’s the difference between last-click and first-click attribution?

Last-click pays whoever’s link the buyer clicked most recently before purchasing. First-click pays whoever brought them in originally. Most programs use last-click, which means you can introduce someone to a product and lose the commission to an affiliate whose link they clicked three weeks later. Ask which model a program uses before a launch.

What is a chargeback in affiliate marketing?

A chargeback is a commission the merchant takes back after the customer refunds or disputes the charge. If a product has a 60-day guarantee, commissions you earn in March aren’t final until late May. Programs with reversal rates above 20% are quietly reducing your real earnings, so ask for the number before you promote.

What is a sub-ID and why should I use one?

A sub-ID is a tag you add to your affiliate link so you can see which placement produced each sale. Same offer, different tags for your email, your review post, and your YouTube description. Without it, you know you made $600. With it, you know $540 came from one email and you should send more of those.

Do I need an affiliate network to start?

No. Plenty of merchants run in-house programs you can apply to directly, and those often pay better because there’s no network fee. Networks make discovery easier and consolidate your payments into one check, which matters once you’re promoting a dozen offers. Most affiliates end up using both.

What to do next

Three things, in order.

Open the dashboard of a program you’re already in and find your EPC, your reversal rate, and your pending versus approved balance. Most affiliates have never looked at all three at once.

Email one affiliate manager and ask the four questions: EPC, cookie duration and attribution, refund rate, payment terms and threshold. You’ll learn more in that one reply than in a month of reading.

Add sub-IDs to your links on your next promotion. Tag every placement. Then look at the report afterward and cut the things that produced nothing.

The vocabulary isn’t the hard part. Using it to pick better offers is.