www.taxprotoday.com/articles/irs-wont-penalize-confused-taxpayers-following-changes-to-tax-code?feed=00000152-a2fb-d118-ab57-b3ff6e310000
blog.taxesforexpats.com/2019/01/17/irs-waives-penalty-for-many-whose-tax-withholding-and-estimated-tax-payments-fell-short-in-2018/
www.irs.gov/newsroom/irs-waives-penalty-for-many-whose-tax-withholding-and-estimated-tax-payments-fell-short-in-2018
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