You can enter the total contribution. If you have more than one account, enter one account number and in the CHET Contribution enter 10,000.
The law limits annual deductions to $5,000 for individual taxpayers and $10,000 for joint filers. It allows taxpayers to carry forward any unused deductions for contributions on or after January 1, 2006 for the five following years as long as each deduction does not exceed the annual maximum.