Self Employed, but not required to pay estimated taxes?
"The annualized method allows you to take a look at each quarter independently and pay the tax in the quarter that you earned it. -- According to Linda Durand, a certified public accountant with Drolet & Associates PLLC in Washington, D.C., from the Bankrate article ""Paying quarterly estimated taxes""  And after paying annualized quarterly estimates, you can still owe up to $1000 at tax time without penalty."
"Also within Germany the tax offices usually determine which tax office is responsible for you by asking where you were more than 180 days of the year (if e.g. you have a second flat where you work). That's a default value, though: in my experience you can ask to be handled by another tax office. E.g. I hand my tax declaration to my ""home"" tax office (where also my freelancing adress is), even though my day-job is 300 km away.  So if you work mostly from Poland and just visit the German customer a few times, you are fine anyways. Difficulties start if you move to Germany to do the work at your customer's place. I'm going to assume that this is the situation as otherwise I don't think the question would have come up.  Close by the link you provided is a kind of FAQ on this EU regulation About the question of permanent vs. temporary they say: The temporary nature of the service is assessed on a case-by-case basis.  Here's my German-Italian experience with this. Background: I had a work contract plus contracts for services and I moved for a while to Italy. Taxes and social insurance on the Italian contracts had to be paid to Italy. Including tax on the contract for services. Due to the German-Italian tax treaty, there is no double taxation. Same for Poland: this is part of EU contracts. By the way: The temporary time frame for Italy seemed to be 3 months, then I had to provide an Italian residence etc. and was registered in the Italian health care etc. system. Due to the German-Italian tax treaty, there is no double taxation. Same for Poland: this is part of EU contracts. Besides that, the German tax office nevertheless decided that my ""primary center of life"" stayed in Germany. So everything but the stuff related to the Italian contracts (which would probably have counted as normal work contracts in Germany, though they is no exact equivalent to those contract types) was handled by the German tax office. I think this is the relevant part for your question (or: argumentation with the German tax office) of temporary vs. permanent residence.  Here are some points they asked: There is one point you absolutely need to know about the German social insurance law: Scheinselbständigkeit (pretended self-employment). Scheinselbständigkeit means contracts that claim to be service contracts with a self-employed provider who is doing the work in a way that is typical for employees. This law closes a loophole so employer + employee cannot avoid paying income tax and social insurance fees (pension  contributions and unemployment insurance on both sides - health insurance would have to be paid in full by the self-employed instead of partially by the employer. Employer also avoids accident insurance, and several regulations from labour law are avoided as well). Legally, this is a form of black labour which means that the employer commits a criminal offense and is liable basically for all those fees.  There is a list of criteria that count towards Scheinselbständigkeit. Particularly relevant for you could be" If you have a one-time event, you are allowed to make a single estimated payment for that quarter on Form 1040-ES.  People seem to fear that if they make one such payment they will need to do it forevermore, and that is not true.  The IRS instructions do kind of read that way, but that's because most people who make estimated payment do so because of some repeating circumstance like being self-employed. In addition, you may qualify for one or more waivers on a potential underpayment penalty when you file your Form 1040 even if you don't make an estimated payment, and you may reduce or eliminate any penalty by annualizing your income - which is to say breaking it down by quarter rather than the full year.  Check on the instructions for Form 2210 for more detail, including Schedule AI for annualizing income.  This is some work, but it might be worthwhile depending on your situation. https://www.irs.gov/instructions/i2210/ch02.html Your freelance income will not qualify you for the work-from-home deductions, for that you would need a T2200 form signed by your employer. But, you are allowed to be self employed as a sole-proprietorship while still being an employee of another company. If you take that route, you'll be able to write-off even more expenses than those you linked to. Things like a portion of your internet bill can be claimed, for example. But note that these deductions would only apply to offset the self-employment income, so if you're not earning very much from the freelance work, it might not be worth all the hassle. Filing taxes when self-employed is definitely more complicated, and many people will get professional tax preparation help - at least for the first time. "From the IRS page on Estimated Taxes (emphasis added): Taxes must be paid as you earn or receive income during the year, either through withholding or estimated tax payments. If the amount of income tax withheld from your salary or pension is not enough, or if you receive income such as interest, dividends, alimony, self-employment income, capital gains, prizes and awards, you may have to make estimated tax payments. If you are in business for yourself, you generally need to make estimated tax payments. Estimated tax is used to pay not only income tax, but other taxes such as self-employment tax and alternative minimum tax. I think that is crystal clear that you're paying income tax as well as self-employment tax. To expand a bit, you seem to be confusing self-employment tax and estimated tax, which are not only two different things, but two different kinds of things.  One is a tax, and the other is just a means of paying your taxes. ""Self-employment tax"" refers to the Social Security and Medicare taxes that you must pay on your self-employment income.  This is an actual tax that you owe.  If you receive a W-2, half of it is ""invisibly"" paid by your employer, and half of it is paid by you in the form of visible deductions on your pay stub.  If you're self-employed, you have to pay all of it explicitly. ""Estimated tax"" does not refer to any actual tax levied on anyone.  A more pedantically correct phrasing would be ""estimated tax payment"".  Estimated taxes are just payments that you make to the IRS to pay tax you expect to owe.  Whether you have to make such payments depends on how much tax you owe and whether you've paid it by other means.  You may need to pay estimated tax even if you're not self-employed, although this would be unusual.  (It could happen, for instance, if you realized large capital gains over the year.)  You also may be self-employed but not need to pay estimated tax (if, for instance, you also have a W-2 job and you reduce your withholding allowances to have extra tax withheld). That said, if you earn significant income from self-employment, you'll likely have to make estimated tax payments.  These are prepayments of the income tax and Social Security/Medicare taxes you accrue based on your self-employment income. As Pete B. mentioned in his answer, a possible reason that your estiamtes are low is because some taxes have already been withheld from the paychecks you received so far during the year (while you were an employee).  These represent tax payments you've already made; you don't need to pay that money a second time, but you may need to make estimated tax payments for your income going forward." When you take the self employed health care deduction on on Line 29 of form 1040 for 2010 it also will lower your self employment tax.  See line 3 of Schedule SE.  You report your net earnings from self employment less line 29 from 1040. Yes, of course. Your business is active since it was established, it just didn't do anything. This is of course re the State taxes, the IRS considers LLC as a disregarded entity and it flows directly to your Schedule C if you're a single member, or your 1065 if you're multiple members. State of Texas never considers LLC as a disregarded (See here questions 13 and 14). You may not pay any taxes, but you have to file. Yes, you need to include income from your freelance work on your tax return.  In the eyes of the IRS, this is self-employment income from your sole-proprietorship business. The reason you don't see it mentioned in the 1040EZ instructions is that you can't use the 1040EZ form if you have self-employment income.  You'll need to use the full 1040 form.  Your business income and expenses will be reported on a Schedule C or Schedule C-EZ, and the result will end up on Line 12 of the 1040.  Take a look at the requirements at the top of the C-EZ form; you probably meet them and can use it instead of the more complicated C form. If you have any deductible business expenses related to your freelance business, this would be done on Schedule C or C-EZ. If your freelance income was more than $400, you'll also need to pay self-employment tax.  To do this, you file Schedule SE, and the tax from that schedule lands on form 1040 Line 57. "As a Canadian resident, the simple answer to your question is ""yes"" Having worked as a tax auditor and as a Certified Financial Planner, you are required to file an income tax return because you have taxable employment income. All the employer is doing is deducting it at source and remitting it on your behalf. That does not alleviate your need to file. In fact, if you don't file you will be subject to a no filing penalty. The one aspect you are missing is that taxpayers may be entitled to tax credits that may result in a refund to you depending on your personal situation (e.g spousal or minor dependents). I hope this helps."