How do I report my 1099-R with an amount in Box 10? Box 10 of the 1099-R form is for taxpayers that have an In-plan Roth Rollover. Publication 575 can be used to figure the amount, if any, you need to include on your tax return. Related articles 1099-R: How do I Enter Distributions from Pensions, Annuities, or Other Retirement Plans? What is the Early Withdrawal Penalty on Form 1099-R? 1099-R: Should I use the Simplified Method Worksheet to figure my taxable amount? RRB-1099: Railroad Benefits: Where do I report form RRB-1099 or RRB-1099-R? What is a Form 1099-R?