Go back through the estimated taxes for 2019 screens and update the information to include the overpayment amount that you applied to 2019. When TurboTax prepares the vouchers, it assumes you are taking your refund, so you have to indicate that 2019's tax bill will be less than estimated during the estimated tax payments interview if you want updated vouchers. See instructions below. https://ttlc.intuit.com/replies/4242911
