Keep in mind that 15% also accounts for any matches you receive from your employer.
Decide on a percentage of your income that you can dedicate to building your portfolio: The general rule of thumb for retirement goals is to invest at least 15% of your income each year, but if you started investing later in your career or want to retire early you may want to consider investing a higher percentage. Keep in mind that 15% also accounts for any matches you receive from your employer. This means that you could contribute 10% of your W-2 income with a 5% match from your employer to reach a total of 15% to hit this benchmark.