A recent SavingForCollege.com article uses Ascensus data to show that average age of 529 plan account owners when they open a 529 plan. The best time to start saving is usually between the ages of 25 and 34, as it’s advised that you should open a plan as soon as you have someone to save for. The average person on our platform opens a 529 account at 44 years old and the majority of people waited until they were at least 35. Parents who start saving when their child is a newborn can accumulate around a third of their goal from earnings by the time their child is college age, while parents that wait until high school will have to contribute six times as much per month and only 10% of their goal will come from earnings. Saving early has more of an impact than saving more.