TurboTax W-4 withholding calculator - https://turbotax.intuit.com/tax-tools/calculators/w4/
IRS W-4 withholding estimator - https://apps.irs.gov/app/tax-withholding-estimator
What did you purchase?
The TurboTax online editions for tax year 2019 are not yet available for purchase!
The TurboTax desktop editions for tax year 2019 are available but you would have to purchase, download and install the software on a personal computer, Win or Mac from this website - https://turbotax.intuit.com/personal-taxes/cd-download/
