Yes, they are similar in that they are both taxes.
Indeed they are.
Everyone understands that you view all taxation as equally bad, that any forcible redistribution of wealth whatsoever is wrong.
Yes, I view wealth confiscation on threat of violence to be wrong.
This is literally the most extreme view it is possible to have on the matter, and the vast majority of people don't agree.
You don't view confiscation on threat of violence extreme?
As most people understand, some taxes are worse than others.
Some robberies are worse than others. They are still robberies.
In Cyprus, they imposed a one-off, regressive, shock tax for which no-one voted, that was automatically confiscated from people's savings.
As opposed to the UK where taxes are regularly taken from people, confiscated directly from pay packets. Voting is irrelevant. It is taken by employing the threat of violence. If taxes were so great, we'd all be voluntarily paying more than we needed to.
In the UK, the proposal is to automatically take money for (relatively) fair, progressive taxes that have been imposed and revised by various parliaments of elected representatives, on which parties have won and lost elections, that are consistently applied, and the money is only taken if you have repeatedly failed to pay on your own, and you have enough to afford it.
In other words, if the threat of violence doesn't work, they will just take it.
Step out of your libertarian fantasy-world, and think about actual negative effects of each tax on ordinary people, and you will see that one is worse.
I've seen the hideous crimes that our taxes fund. I won't ever do that again.