On the other hand thing like cars really should have an all inclusive price sticker. They already have an itemized price sticker on the car so there is really nothing stoping these sellers from putting the remaining fees and taxes on there two as that should be consistent with the same dealer location and with such low inventory.
People will see the post tax price, compare it in their head with the pre-tax price they saw at some other store, and feel like the post tax prices store is more expensive even if this store’s final price is actually slightly lower than the other store’s price.
Thousands. Every municipality in my area can have their own sales tax and can change them whenever they want. For Texas alone that's ~1,220 potentially different sales taxes which can change at any time. Its not an impossible to keep track of thing though, plenty of organizations do it and most payment processors will essentially handle it for you. But its not exactly easy, aggregating all that and getting it all right in the first place is a good bit of work.
There are thousands of different sales tax rates in the US that change multiple times per year.
Each city, county, state and other things like metro transit districts, water districts and school districts can all contribute to the sales tax rate paid by an individual at the point of sale.
It is a very important distinction.
What's wrong with this solution?
Getting rid of sales tax would be the best solution imo but complicated
To replace consumption tax, which ensures those with large savings, yet no income, still get taxed as they spend, you'd have to somehow have full disclosure of all assets, and tax that, along with all the privacy implications.
And just imagine all the work, with every citizen's assets being examined yearly.
Of course, there are other options, but not many which replace consumption tax.
Additionally, not all consumption taxes are across-the-board sales taxes.
Across-the-board sales taxes are highly regressive taxes, because basic consumption needs are relatively flat across a population, so the poorest people pay a much higher percentage of their income in sales taxes than the wealthy.
Here in Mexico we have something called the "canasta básica" (basic basket) which encompasses a set of goods that are defined as basic for living (they are 40 https://www.gob.mx/canastabasica unfortunately the list is in an image so not easy to google translate... stupid government pages). These are closely guarded by the government and I believe the price is closely protected.
Something like that could be extrapolated, and set different taxes to different goods and services. Like, (IMHO, please don't flame me) an XBOX should be heavily taxed, running shoes should be heavily taxed, a "gaming graphics card" should be heavily taxed. Same with services: "go cart racing" should be heavily taxed, Fast-food should be heavily taxed, while fixing stuff (fixing your blender, or your washing machine) should not.
For example, an unsliced bagel is food. A sliced to order bagel is prepared food and taxable. A system like you describe would be insanely complex.
Here’s NY guidance on when a sandwich is taxable: https://www.tax.ny.gov/pubs_and_bulls/tg_bulletins/st/sandwi...
As insane as that is, I think it makes the sales tax more progressive, as poorer people spend a high proportion of income on food. I am always struck when I travel to a place like South Carolina, where the property taxes are low, but people with nothing are paying 9% sales taxes on food.
Which makes it harder for people to know all the ins and outs of...
This is also the case in the US (varies state by state).
Some places may also benefit from high property tax, which now that I think of it, is a "holding" tax, not income tax.
Many landlords and development companies add on percentage based fees. Some merchants will report these on recipes as PIF Tax (Property Improvement Fees). These are not a technically a tax, but impact the consumer the similarly
Even if you are tax exempt or buying non-taxable items like food, the property own still collects PIF.
PIFs are in the contract between the landlord and merchant the actual details of how fees work are not publicly know. Merchants may benefit from actual property improvements, or the fees are entirely a profit stream for the landlord.
If they (or a family member) later purchase prints through their online gallery that are essentially drop shipped to them? Who the hell knows.
There's a simple solution to this: stop doing this. Ban cities and districts from having their own sales taxes. There's no reason to allow this. In my country, there's a single national sales tax that's the same everywhere.
The US's problems are a result of its own stupid decisions.
Nothing unfortunate about it: that decentralization is the cause of most of the problems.
Most VAT based countries have a single VAT rate for the whole country (or possible a country-wide set of rates for different types of products). The United States is not like that. Even if we consider an individual state as the equivalent to Country, each state does not have one consistent sales tax rate.
Typically the state will have one rate, the county can have its own rate, the city its own rate, and potentially even special districts with their own sales tax rates.
That complicates things a lot. For example, if a law required the shown prices to include tax, it would mean that an online website cannot show you the price until you have entered your exact street address. Most people don't want to tell the website where they live just to find out a price that may not be any good.
The variable tax rate means that if the law applied to advertised prices shown on say TV, it would not be possible to have nationwide advertisements that show a price, or even statewide advertisements, or in some cases not even city-wide advertisements. (Unless they set a post-tax price based on what they can sustain with the highest tax rate, which means charging people in lower tax areas a higher price than they would otherwise have charged, just to be able to mention a price at all on TV). Unless the law allowed "between $x and $y depending on your local tax rate" (where X and Y are based on the lowest and highest tax rate for the advertising area).
Most people who want such post tax pricing laws would not be terribly happy with a law that allowed advertising a range like that.