i owe taxes on my Iowa return, if turbo tax files the return for me can I include a payment with it.

You must pay your state tax due using the state’s preferred method of receiving payment.  For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.

https://ttlc.intuit.com/turbotax-support/en-us/help-article/state-taxes/contact-state-department-revenue/L9qVToi02_US_en_US?uid=m6e06um0

No, you can't include a payment but you can ask for direct debit. The better option is to select that you will mail a payment -this is for the program, not your tax return. Do not mail a payment, instead, pay safely online at EasyPay Iowa | Department of Revenue.