Another Hawaii resident here:
First the bad news. The income sources you mention (sale of stock, dividends, etc. etc.) are not tax exempt in Hawaii. Hawaii's income taxes go higher as you have more taxable income (think it goes from 0% to as high as 9.5 or 10% at the highest. BUT, the good news is that most pensions and Social Security are exempt from taxation for retirees. Every couple of years (hhhmmmm, maybe around election time) someone goes on record as being FOR dropping this provision of the tax code. So far, not enough traction to get-r-done.
Everyone pays the state's GET tax (General Excise Tax) on all purchases. On Oahu, it's a bit over 4.5% at point of sale for almost everything (including food). Doesn't sound too bad - much lower than most state sales tax. Problem is that some level of GET is added at every level (wholesale, distributor, point of sale, etc.) So the GET you pay is "hidden" in the price (except the 4.5%.) Real estate taxes are actually pretty low. On $0.5 million house, I pay less than I did on the mainland for $0.15 million house. Car tags don't go down as your car ages (mine are in the $300/year range) All in all, Hawaii can be a tax hell, but for retirees (with most income from pension and SS) it's probably more on the "average" end of the scale with other states. Nords might have more detail.
Koolau, thank you for the good information. I will be honest and tell you that as my wife and I read it we had this terrible sinking feeling. The earlier post about how Hawaii was so tax-friendly for retirees had gotten our hopes up a lot. Although we have talked about making the move to Hawaii for sometime we just started doing more in depth investigation a few days ago. Trying to do our due diligence. That is when I found this forum and the post.
Since this is an early retirement forum I am guessing that few people are yet getting Social Security. We still have several years to go. Even when we get it there is no way we can live on it anywhere in America. With just SS it isn't even enough for the 2 of us to live in Mexico or Thailand. So, of course, we worked hard, saved, invested, and were careful with spending to build up a retirement nest egg. Therefore, even years down the road if we were in Hawaii having only the SS tax-free would be little help.
Isn't it true that almost no one gets a pension anymore? I don't know anyone who does. About the only people who get pensions, I think, are government retirees (federal, state, local). So, in Hawaii the government retirees are not taxed, but most other retirees are. I don't criticize that since it certainly is a good deal if you have a nice government pension to have the added benefit of no Hawaii taxes. I certainly wouldn't want to take that away from anyone. I do wish that for all us hoi polloi though that we had the same deal. As it is then I can see how government retirees who lived and worked in Hawaii plus government retirees from the other 49 states would find Hawaii to be wonderful. I think I read somewhere a few years ago that government is the number one employer in Hawaii so, I suppose, there must be a huge number of government retirees there on top of the many who move from other states.
We will still consider Hawaii. We think we probably could be okay with our retirement income, but losing a big chunk to Hawaii in addition to the chunk Uncle Sam takes would certainly make things much more difficult.
After we read your post my wife and I started discussing another aspect to this. This is sort of a psychological thing. It is clear that in Hawaii we could end up having retired neighbors and friends who have higher income than we do and pay no taxes while we would be paying taxes. We would be glad for them, but we have to decide if that would spoil it for us. We don't want to start feeling any resentment or negative feelings because of the two class system. Anyway, we have lots of things to consider. I thank you again for your help with my question. I hope I didn't come across as negative, just very disappointed.