Why the first $100,000 is the hardest
Charlie Munger famously said the first $100,000 is the hardest, and the math agrees. Early on, almost every dollar in the account is a dollar you put there yourself, because returns on a small balance are small. Saving $1,000 a month at 7% from zero, the first $100,000 takes about 6.7 years, and only around $20,000 of it comes from growth.
Once the balance is bigger, returns start doing a real share of the work. The bars show a saver who starts with $5,000 reaching the second $100,000 in about 4.4 years, the third in about 3.4, and the fifth in about 2.3. Nothing about the saving changed; the pile just got big enough to grow on its own.
Getting there faster
In this early stage your saving rate matters far more than chasing returns. Moving from $1,000 to $1,300 a month cuts more than a year off the first $100k, while squeezing an extra 1% of return saves only a few months. Automatic transfers on payday, capturing any employer match and directing raises straight into savings are the habits that move this number.
Common questions
How long does it take to save $100k?
From zero at a 7% return: about 11.1 years at $500 a month, 6.7 years at $1,000 a month and 4.1 years at $1,800 a month.
Is $100k a good net worth at 30?
It is well above typical for that age in the US and puts compounding firmly on your side for the decades ahead.
Should the first $100k be in cash or investments?
Keep an emergency fund in cash first. Long-term money usually grows faster invested, but it can fall in value in the short run.
This calculator gives estimates for planning. Real returns, rates and prices change, so treat the result as a guide rather than a promise. Read how we build and check our calculators.