What do I need as documentation in order to pay taxes in the Netherlands?
"The Dutch tax office is pretty decent, although slightly overburdened. Don't expect a lot of help, but they're not generally known for making a lot of problems. Digital copies are fine, for instance. They will send you your first VAT notice. You probably would have known if your company would have been incorporated, so I'll assume you're just trading as a natural person. That means you still have to file VAT returns, but the business income is just filed annually as ""other income"".  For the VAT part, you'll need to invoice your customers. Keep a copy of those invoices for your own bookkeeping, and keep track of the matching customer payments. Together these form the chief evidence of your VAT obligation. You also have a VAT deduction from your purchases (it's a Value-Added Tax, after all). Again, keep receipts. The usual VAT period is 3 months, so you'd pay VAT 4 times a year. But if you would pay less than 1883 euro, you might not need to pay at all and just need to file annually The income part is easy with the receipts you had for VAT purposes anyway. Dutch Tax Office, VAT, in English"
Unfortunately, you are required, but most states do have agreements with neighboring states that let the states share the collected taxes without the person having to pay double taxes. So being as this is your first tax return in your current situation, you might be wise to have a professional fill it out for you this year and then next year you can use it as a template. Additionally, I really would like to see someone challenge this across state lines taxation in court. It sure seems to me that it is a inter-state tariff/duty, which the state's are expressly forbidden from doing in the constitution. "For Non-Resident filers, New York taxes New York-sourced income. That includes: real or tangible personal property located in New York State   (including certain gains or losses from the sale or exchange of an   interest in an entity that owns real property in New York State); services performed in New York State; a business, trade, profession, or occupation carried on in New York State; and a New York S corporation in which you are a shareholder (including   installment income from an IRC 453 transaction). There are some exclusions as well. It is all covered in the instructions to form IT-203. However, keep in mind that ""filing"" as non-resident doesn't make you non-resident. If you spend 184 days or more in New York State, and you have a place to stay there - you are resident. See definitions here. Even if you don't actually live there and consider yourself a CT resident." You don't need to file or do anything. The bank will report all transfers over 10 000, but chances are slim that it will even be looked at, if you don't do this every week. Worst case, someone will ask you about the source, and you tell them exactly what you wrote above (I had multiple international transfers over 60k and nobody ever asked). You said you paid his tuition, and he is now paying you back, so in case someone asks, you should be able to produce the documentation on the tuition payment - a bill, or your bank statement showing you paid it; and the amount should be matching, so you have proof. Note that if he pays you interest, it is taxable income. You are obligated to list it on your next tax filing. The I-9 form is required because you are working. It is kept by the employer as proof that you have the proper documents to work. If the government was to inspect their records they can be fined if they don't have those document, in fact they have to keep them for several years after your employment is done. A w-4 form is a federal tax form. There also was probably a state version of the form.  When you completed the w-4 it is used by your employer to determine how much in taxes need to be withheld. Employers don't know your tax situation. Even though you are on work study, you still could have made enough money over the summer to pay taxes. But if this is your only job, and you will not make enough money to have to pay taxes, you can fill out the form as exempt. That means that last year you didn't make enough money to have to pay taxes, and you don't expect to make enough to have to pay taxes this year. If you are exempt, no federal income tax will be withheld. They might still withhold for social security and medicare. The state w-4 can also be used to be exempt from state taxes. If they withhold any income taxes you have to file one of the 1040 tax forms to get that income tax money back. You will have to do so for the state income tax withholding.  A note about social security and medicare. If you have an on campus job, at the campus you attend, during the school year; they don't withhold money for social security and medicare. That law applies to students on work study jobs, and on non-work-study jobs. for single dependents the federal threshold where you must file is: > You must file a return if any of the following apply. Your gross income was more than the larger of— a. $1,000, or b. Your earned income (up to $5,850) plus $350. The VAT number should be equivalent from the point of view of your client. The fact that you are a sole trader and not a limited liability doesn't matter when it comes down to pay VAT. They should pay the VAT to you and you will pay it to the government. I'll guess that their issue is with tax breaks, it is a bit more tricky to receive a tax break on paid taxes if you buy something abroad (at least it is here in Finland). If they won't pay you because of that, you could open a LTD or contract the services of a 'management company' which will do the job of invoicing, receiving the money and passing it back to you, for a fee. Am I required to send form 1099 to non-US citizens who are not even residing in the US? Since they're not required to file US taxes, do I still have to send the form to them? That's tricky. You need to get W8/W9 from them, and act accordingly. You may need to withhold 30% (or different percentage, depending on tax treaty they claim on W8). If you withhold taxes, you also need to file form 1042. I suggest you talk to a tax professional. Is it fine to expose my ITIN (taxpayer identification number) to   individuals or companies who I send the form to them. Since the form   requires me to write my TIN/EIN, what would be the risks of this and   what precautions should be taken to avoid inappropriate/illegal use? No, it is not OK. But if you pay these people directly - you don't have much choice, so deal with it. Get a good insurance for identity theft, and don't transact with people you don't trust. One alternative would be to pay through a payment processor (Paypal or credit cards) - see your next question. I send payments via PayPal and wire transfer. Should I send form   1099-MISC or 1099-K? Paypal is a corporation, so you don't need to send 1099 to Paypal. Whatever Paypal sends to others - it will issue the appropriate forms. Similarly if you use a credit card for payment. When you send money through Paypal - you don't send money directly to your business counterparts. You send money to Paypal. "Finally, I got response from finance center:  ""It doesn't matter where do you study, what does matter is where you   live. So, once you live in Germany, you pay taxes in Germany. And   it doesn't matter who you work for."" So, there are two options to pay taxes: it's paid by an employer or an employee: If I would work for Swiss company, I need to show how much money I make every month (or year) to Finance Center." Why is the US still working with paper checks when Europe went digital about a decade ago? Tax filing is just another area in which the US is lagging. Modernizing it costs money, and the US is quite close to bankruptcy (as seen by the repeated government shutdowns).  Also, the US tax code is quite complicated. For instance, I doubt there's anyone who has a full and complete list of all allowed deductions.  Some comments wonder about multiple incomes. This doesn't require tax filing either. My local tax authority just sends me a combined statement with data from 2 employers and 2 banks, and asks me to confirm the resulting payment. This is possible because tax number usage is strictly regulated. SSN abuse in the US presumably makes this problematic. Edited to add an important one that I forgot, because I don't have a TV myself. You need to: That's really about it, unless you're employing people or running a business turning over more than £81,000 per year (or doing one of a number of relatively unlikely things that require specific paperwork, such as owning a horse or farm animal (but not a dog or cat or similar)). It's not a bureaucratic country. None of those things except the driving licence/car tax/MOT test/car insurance will be a police matter if omitted, but you could be fined for them (although it's vanishingly unlikely that you'd be fined for not registering to vote and for jury service). You don't need to understand the law before being on a jury, because it's the judge's job to ensure that the jury understand the law as it relates to the case in front of them. A few pieces of paperwork jargon for you: Instead of SSN, foreign person should get a ITIN from the IRS. Instead of W9 a foreigner should fill W8-BEN. Foreigner might also be required to file 1040NR/NR-EZ tax report, and depending on tax treaties also be liable for US taxes. I can't speak for the US, but I've completed direct tax payments via my online bank account (for business and personal) in two countries (South Africa and the UK).  I find it easier and with a better record that the transaction took place than any of the other methods available (including going directly into a tax office to pay by cheque). Mail can go missing. Queueing in their offices takes hours and the result can still be misfiled (by them).  Ditto allowing them to do a pay run on your account - they can make a mistake and you'll have difficulty proving it.  A payment via my bank account gives me an electronic record and I can ensure all the details are correct myself. In addition, in the UK, paying online gives you a good few months extra grace to pay.  Even in South Africa, online payments are given a few weeks grace over physical payments.  Their recognising that you paying electronically saves them processing time. I'll start with the bottom line. Below the line I'll address the specific issues. Becoming a US tax resident is a very serious decision, that has significant consequences for any non-American with >$0 in assets. When it involves cross-border business interests, it becomes even more significant. Especially if Switzerland is involved. The US has driven at least one iconic Swiss financial institution out of business for sheltering US tax residents from the IRS/FinCEN. So in a nutshell, you need to learn and be afraid of the following abbreviations: and many more. The best thing for you would be to find a good US tax adviser (there are several large US tax firms in the UK handling the US expats there, go to one of those) and get a proper assessment of all your risks and get a proper advice. You can get burnt really hard if you don't prepare and plan properly. Now here's that bottom line. Q) Will I have to submit the accounts for the Swiss Business even   though Im not on the payroll - and the business makes hardly any   profit each year. I can of course get our accounts each year - BUT -   they will be in Swiss German! That's actually not a trivial question. Depending on the ownership structure and your legal status within the company, all the company's bank accounts may be reportable on FBAR (see link above). You may also be required to file form 5471. Q) Will I need to have this translated!? Is there any format/procedure   to this!? Will it have to be translated by my Swiss accountants? - and   if so - which parts of the documentation need to be translated!? All US forms are in English. If you're required to provide supporting documentation (during audit, or if the form instructions require it with filing) - you'll need to translate it, and have the translation certified. Depending on what you need, your accountant will guide you. I was told that if I sell the business (and property) after I aquire a   greencard - that I will be liable to 15% tax of the profit I'd made.  Q) Is this correct!? No. You will be liable to pay income tax. The rate of the tax depends on the kind of property and the period you held it for. It may be 15%, it may be 39%. Depends on a lot of factors. It may also be 0%, in some cases. I   also understand that any tax paid (on selling) in Switzerland will be   deducted from the 15%!? May be. May be not. What you're talking about is called Foreign Tax Credit. The rules for calculating the credit are not exactly trivial, and from my personal experience - you can most definitely end up being paying tax in both the US and Switzerland without the ability to utilize the credit in full. Again, talk to your tax adviser ahead of time to plan things in the most optimal way for you. I will effectively have ALL the paperwork for this - as we'll need to   do the same in Switzerland. But again, it will be in Swiss German. Q) Would this be a problem if its presented in Swiss German!? Of course. If you need to present it (again, most likely only in case of audit), you'll have to have a translation. Translating stuff is not a problem, usually costs $5-$20 per page, depending on complexity. Unless a lot of money involved, I doubt you'll need to translate more than balance sheet/bank statement. I know this is a very unique set of questions, so if you can shed any   light on the matter, it would be greatly appreciated. Not unique at all. You're not the first and not the last to emigrate to the US. However, you need to understand that the issue is very complex. Taxes are complex everywhere, but especially so in the US. I suggest you not do anything before talking to a US-licensed CPA/EA whose practice is to work with the EU/UK expats to the US or US expats to the UK/EU. If your gross income is only $3000, then you don't need to file: https://www.irs.gov/pub/irs-pdf/p501.pdf That said, pay careful attention to: https://www.irs.gov/individuals/international-taxpayers/taxpayers-living-abroad You should be reporting ALL income, without regard to WHERE you earned it, on your US taxes. Not doing so could indeed get you in trouble if you are audited. Your level of worry depends on how much of the tax law you are willing to dodge, and how lucky you feel. "the state of New Mexico provides guidance in this exact situation. On page 4: Gross receipts DOES NOT include: Example: When the seller passes tax to the buyer, the seller should   separate, or “back out”, that tax from the total income to arrive at   ""Gross Receipts,"" the amount reported in Column D of the CRS-1 Form.   (Please see the example on page 48.) and on page 48: How do I separate (“back out”) gross receipts tax from total gross receipts?  See the following examples of how to separate the gross   receipts tax:  1) To separate (back out) tax from total receipts at the   end of the report period, first subtract deductible and exempt   receipts, and then divide total receipts including the tax for the   report period by one plus the applicable gross receipts tax rate.  For example, if your tax rate is 5.5% and your total receipts    including tax are $1,055.00 with no deductions or exemptions, divide   $1,055.00 by 1.055. The result is your gross receipts excluding tax   (to enter in Column D of the CRS-1 Form) or $1,000.  2) If your tax   rate is 5.5%, and your total gross receipts including tax are   $1,055.00, and included in that figure are $60 in deductions and   another $45 in exemptions:  a) Subtract $105 (the sum of your   deductions and exemptions) from $1,055. The remainder is $950. This   figure still includes the tax you have recovered from your buyers.  b) Divide $950 by 1.055 (1 plus the 5.5% tax rate). The result is   $900.47.  c) In Column D enter the sum of $900.47 plus $60 (the amount   of deductible receipts)*, or $960.47. This figure is your gross   receipts excluding tax." "You don't have to hire a tax consultant, there is a number of companies who sell software (installable or web-based) that helps you do it by asking for all relevant data interview-style. These typically cost between 15 and 25 EUR. I'm not sure whether any of them are available in English, but if you can read German well, you should be OK. taxback.com is in English, but to be honest it looks a bit dodgy to me. Now for your questions: are there some tricky fields (lines) that after filling in my taxes will be counted higher? This is rare, at least for employees you nearly always get something back. are there some tricky fields (lines) that after filling in my taxes could be counted lower? Not in general. Marriage is mentioned below, and otherwise it's all about individual deductibles. Ah, one important factor: if you have investment income and have not filed a Freistellungsauftrag with your bank, you can get some of the taxes by filling out the ""Anlage KAP"" form with data you got in the Jahressteuerbescheinigung from your bank. are there some flat-rates (Pauschals) that I could get advantage from? Absolutely. As an employee, the biggest factor is the Werbungskostenpauschale of (I think currently) 1000 EUR for general work-related expenses, which will be accepted without proof. If your expenses are higher than that and you file individual expenses, there are flat rates for work-related moving and for commuting distance. is it better to give a tax return together with my wife (who was only a girlfriend in 2013 living with me in one household) or to give it separately? It's not possible to do a joint tax filing for the time before your marriage. What you should consider is to apply for a different tax class from now on, if one of you earns significantly more than the other. when separately, do I have to fill her information in my tax return or can I just pretend there is nobody else in my apartment? As far as taxes are concerned, unmarried roommates are treated completely separately with one exception: only one of you can deduct service charges included in your rent. You have to get a Nebenkostenabrechnung from your landlord, and service charges, i.e. janitor, gardener, etc. should be marked separately. But this may not be worth bothering with, usually it results in a tax return of maybe 15 EUR. is there any guide in English that could be of help with filling in the tax return form? I couldn't find anything that looked really useful in a short search."