Read on to see where the respondents, now older and wiser, say they went wrong, and discover the most common financial mistake people make when they are young. And for more financial insights, This Is the Biggest Debt People Your Age Have, Survey Shows. Respondents who made this mistake in their 20s and 30s: 9.9 percent And for how much cash people have stashed away, This How Much Money People Your Age Have on Average, Data Shows. Respondents who made this mistake in their 20s and 30s: 10.3 percent Respondents who made this mistake in their 20s and 30s: 10. 3 percent Respondents who made this mistake in their 20s and 30s: 10.7 percent And for more on where taxes are astronomical, This State Has the Highest Taxes in America, According to Data. Respondents who made this mistake in their 20s and 30s: 11.0 percent Respondents who made this mistake in their 20s and 30s: 11.6 percent Respondents who made this mistake in their 20s and 30s: 14.6 percent Respondents who made this mistake in their 20s and 30s: 17.4 percent And for more on how people blow through their cash, This Is How Much Money People Spend on 25 Everyday Items, Data Shows. Respondents who made this mistake in their 20s and 30s: 21.7 percent Respondents who made this mistake in their 20s and 30s: 24.1 percent Respondents who made this mistake in their 20s and 30s: 27.2 percent And for a factor that could affect your score, If You’re Not Spending Money on This, You’re Hurting Your Credit Score. Respondents who made this mistake in their 20s and 30s: 33.2 percent Respondents who made this mistake in their 20s and 30s: 34.7 percentae0fcc31ae342fd3a1346ebb1f342fcb And for more helpful financial information sent straight to your inbox, sign up for our daily newsletter. Respondents who made this mistake in their 20s and 30s: 42.6 percent Respondents who made this mistake in their 20s and 30s: 48.5 percent Respondents who made this mistake in their 20s and 30s: 65.2 percent And for more on what to do with your money as you age, This Is the Best State to Retire in America.