Why is my blended tax rate 49.3% when I only made 3k more than last year? Nothing else has changed since last year when it was 10.9%.

The blended tax rate is your tax liability divided by your taxable income, so it is possible for there to be large variations year to year.  Your tax liability includes any self-employment, capital gains, and/or special taxes.  The blended tax rate is not used anywhere on your tax return.  

I'm not self employed, have capital gains or special taxes though.  So this makes no sense. 

I suggest you compare your tax return Form 1040 in 2024 line by line with your return from 2023 to see what changed. 

To view your form 1040 and schedule 1 to 3:

1. Choose Tax Tools from your left menu bar in TurboTax Online
2. Choose Tools
3. Choose View Tax Summary
4. See the Preview my 1040 option in the left menu bar and click on it
5. Choose the Back option in the left menu bar when you are done