One of the easiest ways to convince the public that the government is inept and wasteful is to make it as difficult to do the necessary as possible. If politicians cared, this wouldn’t be an issue.
In contrast, if the process is streamlined every year, most people won't even pay attention to how much they pay in taxes - which isn't great if your ultimate goal is to keep government as small as possible.
The ruling class doesn't even have to actively communicate and conspire with one another (although they do). Their independent attempts to undermine and control government furthers the agenda of all private businesses.
That's the financial impact. Depending on what you're missing, the nonfinancial might be opening yourself to perjury, because you're knowingly claiming a falsehood as a fact on a tax return (even if it's financially in the government's benefit)... never mind potentially screwing up future tax returns in the process.
All this is with just the very basics, not counting step up basis, trusts or anything slightly complicated.
You are all done.
Unless you have something wack going on its not even a process. I have had signups which are more complicated then it.
American taxes on the other hand mega suck, and have 9000 pitfalls.
This results in a lot of K-1s, which tax preparers charge you like $500 a form for, except all of mine had values like $2.
Luckily you just kind of do it halfway right in TurboTax and it works out.
And amending is online form where everything is clearly explained, links to documentation. And longest time it takes is actually to look up numbers from your own records.
H&R has lobbyists to ensure taxes are complicated and stressful.
The only opposing political argument I've heard is that if income taxes were this simple, many people would be overpaying. I think that argument has many obvious flaws. Unfortunately few US citizens demand anything of their politicians on this topic or other topics that would dramatically improve their lives. Instead they care more about vanity topics that don't even effect them.