I am a citizen of a European country who worked a couple of years in the USA, then moved back to Europe. I withdrew my 401(a) pension last year as a lump sum and need to know how this is taxable.
(1) Am I correct that the federal tax is standard withholding plus 10%?
(2) Under what conditions would I/would I not need to file a state tax return? I do not live in any US state when I withdrew the pension lump sum.