In everyday English money slang, a “monkey” usually means £500 (five hundred pounds) in British money, not an actual animal.

Quick Scoop on “Monkey” in Money

  • In UK cockney / betting / street slang, “a monkey” = £500.
  • It’s in the same family as:
    • “pony” = £25
    • “ton” = £100
    • “grand” = £1,000

A simple example:

“He put a monkey on that football match”
means
“He bet £500 on that football match.”

Where it Comes From (short version)

The exact origin isn’t completely clear, but modern explanations often link it to historical Indian rupee banknotes featuring monkeys, used by British soldiers and traders, which then morphed into UK slang for a fixed sum. The article you’d find on this topic notes that “how much is a monkey?” is more about that slang amount than buying a real monkey.

What If You Meant a Real Monkey?

If you literally mean “how much does a monkey cost to buy as a pet,” the prices are wildly higher than the slang amount and vary by species:

  • Marmoset monkeys: about $1,500–$2,500 as a typical range.
  • Tamarin monkeys: about $1,500–$2,500.
  • Capuchin monkeys: often $5,000–$7,000 or more.
  • Spider monkeys: around $6,000–$14,000.
  • Some breeders list “pocket” marmosets around $5,900–$6,900 in recent ads.

Owning a monkey is also expensive long-term: food, specialist vets, and housing add thousands over its life, and many vets and welfare groups advise strongly against keeping monkeys as pets at all.

Simple takeaways

  • If you’re asking slang : a monkey in money = £500.
  • If you’re asking about a real animal : expect several thousand dollars , plus very high care costs and serious ethical and legal issues.

Information gathered from public forums or data available on the internet and portrayed here.