I found the answer here. It's a variable tax rate based on salary in Afgahani, not dollars.
| Gross Income | tax rate |
| 0-60,000 | 0% |
| 60,000-150,000 | 2% |
|150,000-1,200,000| 10% + AFN1800 |
| 1,200,000 | 20% + AFN106,800 |
Can you file it online? : No
If your spouse is tax resident in the UK then they will be liable to pay UK tax on their foreign income. If he is living for more than half the year in the UK, he will almost certainly be tax resident in the UK.
Most people in the UK do not complete a tax return, because their tax is automatically deducted by their employer (pay as you earn). However, ...
This is a case for a Steuerberater (Tax Adviser), that has dealings with the Czech Republic!
From the (German) side, legally there will be no problems as long as you deal with
the taxes etc. properly as a self employed person
What type of Aufenthaltstitel do you have?
a National Niederlassungserlaubnis or Daueraufenthalt-EU
The second is better when ...
Mark Johnson's answer is essentially correct. The income you're speaking of is not likely to be interest income, but the same principle applies: you can file an amended return.
To answer the questions posed in the body of the text:
Should I have mentioned that I own stock in the company I work for?
Since the tax is an income tax, you do not need to ...
I have never had to deal with US Taxes.
For me, listening to such stories and general reading about this topic is like watching a vampire horror movie on television - knowing that they will never get out of the screen.
I do remember statements being made that corrections to an existing tax return can be made.
The advice generaly given was ...