did you take any action in 2025 requiring 8606? in that case you can correct the Line 2.
Do not attach explanatory letters to 1040 unless instructed by IRS.
Why is the basis wrong.? did you pay the correct tax in 2014.? in 2009?
How big is the basis error compared to the total value of IRA? It may be miniscule tax effect.
@paulalbertson
