1. Over time, more and more people will contribute to their 401(k) plans, and balances will increase.
2. As the stock market goes up, balances in 401(k) plans will go up as well.
3. As the population increases, more and more people will put money into 401(k) plans.
4. As fewer people have defined benefit pensions, more money will go into 401(k) plans.
MethodologyThis calculator estimates how much you'll need to save for retirement. To make sure you're thinking about the long haul, we assume you'll live to age 92. But you could live to be 100 or incur large medical bills early on in retirement that may raise your costs even further. Social Security is factored into these calculations, but other sources of income, such as pensions and annuities, are not. All calculations are pre-tax.