I will recite from the official dcity manual post that you can check for more information about this game in their post https://peakd.com/hive-140217/@dcitygame/dcity-manual

dCITY is a city simulator game based on Hive-Engine Non Fungible Tokens. The NFTs represent assets in the game. Each individual card a building, citizen, etc., and the total collection of your cards is your city. dCITY allow players to optimize their cities in terms of buildings, population, and income. The aim of the game is to buy new buildings, but also use diplomacy and tact with fellow players to achieve the materials you need to grow and prosper. Obviously, there are several ways you can approach this, but we’ll let you learn them on your own and test them out.

This is a numbers game, but with the added randomness of society. There will be events which can have either a positive or negative impact on your city, depending on how your city is built. Choose wisely when helping or refusing to help another player. They might need your help today, but you never know when you might need their help in the future.

Yeah, this is a calculation game which require many calculation in order to get everything worked well. There is some rewards as well from getting into the top 400 leaderboard or holding the SIM token.

Tax on Dcity

I saw there is tax information on the government & taxes -> President & Taxes menu.

Here is some tax that we could see :

Police tax: 1% of SIM income. Police Station cards work 4x better when activated.

Education tax: 1% of SIM income. Boosts education by 10% when activated.

Art tax: 1% of SIM income. Boosts creativity by 10% when activated.

War tax: 0-8% of SIM income. 80% of that tax goes to war shares owners when activated.

Eco tax: 1% of SIM income. Wind Turbines income increase by 1 and Solar Plants income increase by 2 when activated.

Jobs tax: 1% of SIM income. Does nothing.

Basic tax: 1-8% of SIM income. The President can use it to reduce SIM inflation.

Luxury tax: 20-70% of HIVE rewards. Penalty for 0 SIM income cities.

Additionally, there is a tax (income tax) that is beyond the control of the President.

Income tax is based on the average SIM token price over the last 3 days. When the price goes down, this tax should go up and decrease inflation and vice versa when the token price going up. Income tax can be reduced by voting on the income tax reduction option in the lobby.

Well, some many kind of tax on the DCity right ?

Now let's see how we can reduce them :

Law Firm: Reduces taxes by fixed 1%. Works only once per city.

Law Corporation: Reduces taxes by fixed 4%. Works only once per city.

Large Garbage Dump: Reduces taxes by fixed 2%. Works only once per city.

Large Graveyard: Reduces taxes by fixed 2%. Works only once per city.

Tax Collector: Reduces taxes by fixed 0.2%. Every card counts.

So, if we got all of the building, we can get 9% tax reduce, while we can collect as much tax collector to reduce by 0.2% for each of them..

Trying Get a Law Firm

I decide to get a law firm for 8525 SIM. I should get 1 tax reduce based on the above explanation.
Let's see the effect !

My city condition before getting the law firm

Current tax is 100% (112.612%). 0 Reduces cause I don't have any tax reduces card

My total tax is 100% (112.612%), with income tax is 96%, Income tax reduction (lobby) is -2.515%, war tax 8%, war tax (lobby) 1.127%, eco tax 1%, jobs tax 1%, and basic tax 8%

Let's see my city after get the law firm :

There is no different from income and taxes from the main city menu

At the current tax menu, we can see the tax is reduce by 1% into 111.612 %, and there is law firm tax reduces by -1%. But, I guess it's still 100% since it above 100% .

At the total tax menu, there is no different since the stats before I bought the cards.

So I have few thought here, I think we need to get more tax reduces until our current tax is less than 100%, if we can't achieve that, It seems that there is no effect at all ?

Update on My City and Rank Status

Here is my current city situation, with 37 SIM income from tax refund

I'm dropped 3 position into 272 Income leaderboard, with 37 SIM income. Now my friend @dewabrata dropped into 280 position with 31 SIM income, something happens on his City, I guess ?
For Population, I'm going up 10 position into 1309 position, and on popularity, I'm up 9 position into 955 position (at least the law firm give me positive popularity 😂)

Next Step

I'm monitoring the current market, if I saw a cheap tax refund cards, I willl try to get some. I want to check the other cards to give tax reduces as well, to see if they are cheap enough to get ? I wonder what will happens when my tax is below than 100%.

Final Words

~Thank You~