why my State refund changed when i added W2 from my new state

[elogan3265]

I moved from NY to FL last year, 2021. When filing my taxes I noticed that my NY refund decreased significantly when I entered the W2 from my new state, FL. I understand that the federal would change due to increased federal income, but why did my NY refund change. Isn't it based on the money I earned while a resident of NY?

[MaryK4]

New York uses a progressive system which means it uses your total income to determine which tax rate is applied to your New York income.  

For example (illustrative only), if you made only $10,000 in New York you would not owe tax.  However, if you made $50,000 in New York and Florida, your tax rate is 10% so you would owe $1000 on your $10,000 NY income.

[elogan3265]

Thank you!