Last March I hit $4,200 MRR on my main SaaS product and genuinely thought I'd made it as an indie maker. Then a few months later I watched the same dashboard dip back to $3,100 after my biggest customer churned out. That's the bootstrapped life — you celebrate, then reality humbles you.
So I started building a second income stream. Then a third. Now I run four small products, a newsletter, and yes, an affiliate portfolio that quietly brings in $800–$1,400 a month without me shipping a single line of code for it. I'm going to walk you through exactly how I got there, why I think SaaS and API affiliate programs are the most underrated income source for developers, and the specific program I lean on most heavily right now.
This isn't a "passive income while you sleep" fantasy post. I'll show you the math. I'll show you the months where I made basically nothing. And I'll show you the calculation that convinced me this is worth your time as a solo founder.
My Affiliate Wake-Up Call
I've been bootstrapping for three years now. My first product was a Chrome extension I spent four months building and made about $300 total from before I killed it. My second attempt was a Notion template that did better — pulled in roughly $1,200 over its lifetime. Both of those taught me the same painful lesson: building products is hard, distribution is harder, and most ideas quietly die.
Then around month eight, I wrote a blog post comparing a few developer tools I'd been using. I threw in an affiliate link for one of them on a complete whim. The post ranked, picked up some steady search traffic, and over the next 90 days earned me around $180. I had spent maybe three hours writing it.
That's when something clicked. I'd been grinding on products making $200–$400 a month. Here was a single blog post earning a comparable amount with zero maintenance, zero support tickets, zero infrastructure to keep alive. The recurring revenue piece was the real kicker — those commissions kept showing up in my dashboard month after month, like a tiny SaaS I hadn't built.
I wasn't getting rich. But I was getting MRR from content. And as someone obsessed with MRR, that felt like a cheat code.
The Indie Maker Case for Affiliate Revenue
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