Washington state sales tax

Yes. You will be able to claim a WA state sales tax deduction if you itemize on your income tax return.

To enter this transaction in TurboTax, log into your tax return (for TurboTax Online sign-in, click Here) and click on "Take me to my return") type "Sales Tax Deduction" in the search bar then select "jump to Sales Tax Deduction". TurboTax will guide you in entering this information.

Alternatively, to enter your sales taxes and major purchases in TurboTax Online or Desktop, please follow these steps:

1. Once you are in your tax return, click on the “Federal Taxes” tab ("Personal" tab in TurboTax Home & Business)
2. Next click on “Deductions & Credits”
3. Next click on "jump to full list" or “I’ll choose what I work on”
4. Scroll down the screen until to come to the section “Estimates and Other Taxes Paid ”
5. Choose "show more", then Sales Tax (start/update/revisit)
6. Choose - continue to sales tax and choose "Easy Guide"

You can use this helpful state sales tax calculator link : http://www.taxrates.com/calculator/ to get your general state sales tax rate for your area.

What should you enter when the tax rate changes during the year? For Seattle, in 2017 Q1, the combined rate was 9.6%. But in Q2, it was raised to 10.1%.

Just use the year end tax rate.