How Old Was Bill Gates When He Started Microsoft

Let’s settle the age-old question—or rather, the age-of-Bill question. How old was Bill Gates when he started the behemoth we now call Microsoft? The short answer is 20, but the real story is far funnier, nerdier, and involves a whole lot of skipping class.

The Birth of a Nerd Empire (and a Near Death of a College Career)

It was 1975, and Bill Gates was a deeply average college sophomore at Harvard. He wasn’t tearing up lecture halls; he was tearing up computer manuals in his dorm room with his best pal, Paul Allen.

They saw a photo of the Altair 8800, a dinky little computer kit, on the cover of Popular Electronics. Bill, then just 19, called the company and lied through his braces, claiming he had a working BASIC programming language for it.

Spoiler: He didn’t have anything. But Bill’s bluff was so confident, so gloriously cocky, that the company gave him a deal. It’s the business equivalent of walking into a Michelin-starred kitchen with no ingredients and promising a five-course meal.

The Legal Fine Print (or, How to Quit School Like a Boss)

By the time Microsoft officially filed for incorporation on April 4, 1975, Bill was exactly 20 years old. He was old enough to drink… just barely, but too young to rent a car without a huge surcharge.

Bill Gates Younger: How He Started Microsoft at Just 20

Here’s the ridiculous part: Bill didn’t immediately drop out of Harvard. He hung around for another year, treating his classes like a boring side quest while his main mission—world software domination—was already in motion.

He finally told Harvard to kick rocks in 1976. At that point, he was a very late teen dropout—21 to be exact. Imagine telling your parents, “Don’t worry, I’m leaving the Ivy League to sell computer code to hobbyists in a garage.” Most parents would have called a therapist.

Wait, Wasn’t He a Child Prodigy?

Pop culture loves the image of a 12-year-old Gates building a mega-corp. And sure, he was writing code at 13 and getting special permission to skip high school math (because he was bored, obviously).

Interesting Facts about Microsoft | Facts you never knew

But let’s be clear: Microsoft as a company started when Gates was a young adult, not a middle-schooler. He was old enough to buy a beer in most countries, yet young enough to still have terrible acne and a questionable haircut.

The real mind-bender? At the age most of us are panicking about finals or student loans, Bill was negotiating contracts with giant corporations. He was 20, running on pizza and Diet Mountain Dew, and accidentally creating a monopoly.

Bill Gates Private Office

The Surprising Fact That Will Break Your Brain

Here’s a jaw-dropper: Bill Gates was younger when he founded Microsoft than Mark Zuckerberg was when he founded Facebook. Zuck was 19, sure, but Bill was a mere 20—and Mark’s company started as a joke website for ranking girls. Bill’s started as a bold-faced lie to a magazine.

Also, at age 20, Bill had never held a real job. He’d never even mowed a lawn for money. His entire resume was “good at computer code” and “has a friend with a microcomputer.” That’s it. That’s the resume of a future billionaire.

So next time you feel behind in life, remember: Bill Gates didn’t even have a bachelor’s degree when he became a CEO. He was a college kid who talked fast, worked hard, and got lucky. And he was 20—barely old enough to vote, but plenty old enough to change the world.