As a CA resident, all income from all sources worldwide are taxable to CA. Generally, you would pay taxes on the income to the state in which you earned the income and then take a credit for the taxes paid to that state on your CA return so the income is not double taxed. However since WA has no state tax, you will just claim all the income on your CA return without the need to file a non-resident return.
Residents – File a California tax return if either your gross income (which consists of all income you received from all sources in the form of money, goods, property, and services, that is not exempt from tax) or your adjusted gross income (which consists of your federal adjusted gross income from all sources, reduced or increased by all California income adjustments) is more than the amounts shown on the chart below for your filing status, age, and number of dependents. FTB Pub 1-31
Other State Tax Credit
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