VA offers a credit for taxes paid to another state on income that is also taxed by VA. I earned money this year when I was a resident in MA and have earned money now that I live in VA. Some of my VA income is also taxed by MA and VA wants me to calculate how much tax I paid on only that income so that I can claim a credit. But the MA form for non-resident income is combined with part-year income and computes the tax on all of it together. Even if I remove the part-year income from the return, the non-resident income is still based on calculating fractions of exemptions that are based on all of my income while a non-resident, not just the dual-taxed income.
Has anyone had a credit claim accepted with a calculation this involved? What math did you use to compute the credit amount?