Income Tax on per Diem (Non Accountable plan)
A per diem payment is a cost of doing business for the company, not for you. They can claim it (probably); you can't (definitely).
"This answer is applicable to the US.  Similar rules may hold in some other countries as well.   The shares in an open-ended (non-exchange-traded) mutual fund are not traded on stock exchanges and the ""market"" does not determine the share price the way it does for shares in companies as brokers make offers to buy and sell stock shares. The price of one share of  the mutual fund (usually called Net Asset Value (NAV) per share) is usually calculated at the close of business, and is, as the name implies, the net worth of all the shares in companies that the fund owns plus cash on hand etc divided by the number of mutual fund shares outstanding. The NAV per share of a mutual fund might or might not increase in anticipation of the distribution to occur, but the NAV per share very definitely falls on  the day that the distribution is declared. If you choose to re-invest your distribution in the same fund, then you will own more shares at a lower NAV per share but the total value of your investment will not change at all.  If you had 100 shares currently priced at $10 and  the fund declares a distribution of $2 per share, you will  be reinvesting $200 to buy more shares but the fund will be selling you additional shares at $8 per share (and of course, the 100 shares you hold will be priced at $8 per share too.  So, you will have 100 previous shares worth only $800 now + 25 new shares worth $200 for a total of 125 shares at $8 = $1000 total investment, just as before. If you take the distribution in cash, then you still hold the 100 shares but they are worth only $800 now, and the fund will send you the $200 as cash. Either way, there is no change in your net worth. However, (assuming that the fund is is not in a tax-advantaged account), that $200 is taxable income to you regardless of whether you reinvest it or take it as cash. The fund will tell you what part of that $200 is dividend income (as well as what part is Qualified Dividend income),  what part is short-term capital gains, and what part is long-term capital gains; you declare the income in the appropriate categories on your tax return, and are taxed accordingly. So, what advantage is there in re-investing? Well, your basis in those shares has increased and so if and when you sell the shares, you will owe less tax. If you had bought the original 100 shares at $10 and sell the 125 shares a few years later at $11 and collect $1375, you owe (long-term capital gains) tax on  just $1375-$1200 =$175  (which can also be calculated as $1 gain on each of the original 100 shares = $100 plus $3 gain on the 25 new shares = $175). In the past, some people would forget the intermediate transactions and think that they had invested $1000 initially and gotten $1375 back for a gain of $375 and pay taxes on $375 instead. This is less likely to occur now since mutual funds are now required to report more information on the sale to the shareseller than they used to in the past. So, should you buy shares in a mutual fund right now? Most mutual fund companies publish preliminary estimates in November and December of what distributions each fund will be making by the end of the year. They also usually advise against purchasing new shares during this period because one ends up ""buying a dividend"".  If, for example, you bought those 100 shares at $10 on the Friday after Thanksgiving and the fund distributes that $2 per share  on December 15, you still have $1000 on December 15, but now owe taxes on $200 that you would not have had to pay if you had postponed buying those shares till after the distribution was paid. Nitpickers: for simplicity of exposition, I have not gone into the detailed chronology of when the fund goes ex-dividend, when the distribution is recorded,  and when cash is paid out, etc., but merely treated all these events as happening simultaneously." I can only answer about the U.S. For question 2, I believe the answer is no. If you are a non-resident alien for tax purposes, then only income connected to the U.S. is reported as income on the tax return. Unless there were any non-deductible contributions to your pre-tax IRAs, when you convert to Roth IRA, the entire amount of the conversion is added to your income. So the tax consequence is the same as if you had that much additional U.S. income. If you are a non-resident alien with no other income in the U.S., then the income you have to report on your U.S. tax return will basically consist of the conversion. Non-resident aliens do not have a standard deduction. However, all people have a personal exemption. If we take 2013 as an example, the exemption is $3900 per person. We will assume that you will file as single or married filing separately (non-resident aliens cannot file as married filing jointly). The first $3900 of income is covered by the exemption, and is not counted in taxable income. For single and MFS, the next $8925 of income is taxed at 10%, then next $27325 of income is taxed at 15%, and so on. So if you convert less than the personal exemption amount every year ($3900 in 2013), then in theory you do not pay any taxes. If you convert a little bit more, then some of the conversion will be taxed at 10%, etc. I believe the answer to your question boils down to a discussion of tax strategies and personal situation, both now and in the future.  As a result, it's pretty hard to give a concrete example to the question as asked right now. For example, if your tax rate now is likely to be higher than your tax rate at retirement (it is for most people), than putting the higher growth ETF in a retirement fund makes some sense.  But even then, there are other considerations. However, if the opposite is true (which could happen if your income is growing so fast that your retirement income looks like it will be higher than your current income), than you might want the flexibility of holding all your ETFs in your non-tax advantaged brokerage account so that IF you do incur capital gains they are paid at prevailing, presumably lower tax rates.   (I assume you meant a brokerage account rather than a savings account since you usually can't hold ETFs in a savings account.) I also want to mention that a holding in a corp account isn't necessarily taxed twice.  It depends on the corporation type and the type of distribution.  For example, S corps pay no federal income tax themselves. Instead the owners pay taxes when money is distributed to them as personal income.  Which means you could trickle out the earnings from an holdings there such that it keeps you under any given federal tax bracket (assuming it's your only personal income.)   This might come in handy when retired for example.   Also, distribution of the holdings as dividends would incur cap gains tax rates rather than personal income tax rates. One thing I would definitely say: any holdings in a Roth account (IRA, 401k) will have no future taxes on earnings or distributions (unless the gov't changes its mind.)  Thus, putting your highest total return ETF there would always be the right move. "Highly Compensated Employee Rules Aim to Make 401k's Fair would be the piece that I suspect you are missing here.  I remember hearing of this rule when I worked in the US and can understand why it exists.  A key quote from the article: You wouldn't think the prospect of getting money from an employer   would be nerve-wracking. But those jittery co-workers are highly   compensated employees (HCEs) concerned that they will receive a refund   of excess 401k contributions because their plan failed its   discrimination test. A refund means they will owe more income tax for   the current tax year. Geersk (a pseudonym), who is also an HCE, is in   information services and manages the computers that process his firm's   401k plan. 401(k) - Wikipedia reference on this:  To help ensure that companies extend their 401(k) plans to low-paid   employees, an IRS rule limits the maximum deferral by the company's   ""highly compensated"" employees, based on the average deferral by the   company's non-highly compensated employees. If the less compensated   employees are allowed to save more for retirement, then the executives   are allowed to save more for retirement. This provision is enforced   via ""non-discrimination testing"". Non-discrimination testing takes the   deferral rates of ""highly compensated employees"" (HCEs) and compares   them to non-highly compensated employees (NHCEs). An HCE in 2008 is   defined as an employee with compensation of greater than $100,000 in   2007 or an employee that owned more than 5% of the business at any   time during the year or the preceding year.[13] In addition to the   $100,000 limit for determining HCEs, employers can elect to limit the   top-paid group of employees to the top 20% of employees ranked by   compensation.[13] That is for plans whose first day of the plan year   is in calendar year 2007, we look to each employee's prior year gross   compensation (also known as 'Medicare wages') and those who earned   more than $100,000 are HCEs. Most testing done now in 2009 will be for   the 2008 plan year and compare employees' 2007 plan year gross   compensation to the $100,000 threshold for 2007 to determine who is   HCE and who is a NHCE. The threshold was $110,000 in 2010 and it did   not change for 2011. The average deferral percentage (ADP) of all HCEs, as a group, can be   no more than 2 percentage points greater (or 125% of, whichever is   more) than the NHCEs, as a group. This is known as the ADP test. When   a plan fails the ADP test, it essentially has two options to come into   compliance. It can have a return of excess done to the HCEs to bring   their ADP to a lower, passing, level. Or it can process a ""qualified   non-elective contribution"" (QNEC) to some or all of the NHCEs to raise   their ADP to a passing level. The return of excess requires the plan   to send a taxable distribution to the HCEs (or reclassify regular   contributions as catch-up contributions subject to the annual catch-up   limit for those HCEs over 50) by March 15 of the year following the   failed test. A QNEC must be an immediately vested contribution. The annual contribution percentage (ACP) test is similarly performed   but also includes employer matching and employee after-tax   contributions. ACPs do not use the simple 2% threshold, and include   other provisions which can allow the plan to ""shift"" excess passing   rates from the ADP over to the ACP. A failed ACP test is likewise   addressed through return of excess, or a QNEC or qualified match   (QMAC). There are a number of ""safe harbor"" provisions that can allow a   company to be exempted from the ADP test. This includes making a ""safe   harbor"" employer contribution to employees' accounts. Safe harbor   contributions can take the form of a match (generally totaling 4% of   pay) or a non-elective profit sharing (totaling 3% of pay). Safe   harbor 401(k) contributions must be 100% vested at all times with   immediate eligibility for employees. There are other administrative   requirements within the safe harbor, such as requiring the employer to   notify all eligible employees of the opportunity to participate in the   plan, and restricting the employer from suspending participants for   any reason other than due to a hardship withdrawal." The amount earned is taxable. It needs to shown as income from other sources. Although the last date for paying Advance tax is over [15 March], there is still time to pay Self-Assessment tax till 15 June. If the tax amount due is less than 10,000/- there is no penalty. If the tax is more than Rs 10,000/- there is penalty at the rate of 1% per month from March, and if the amount of tax exceeds 40% of the total tax, there will be additional 1% interest from December.  The tax can be paid online via your Banks website or using the Income Tax website at https://onlineservices.tin.egov-nsdl.com/etaxnew/tdsnontds.jsp The form to be used is 280. You can use the Income tax website to calculate and file your tax returns at https://incometaxindiaefiling.gov.in/ or use the services of a CA. Edit: If the income is less than expenses, you need not pay tax. Maintain proper records [receipts] of income and expenses, if possible use a different Bank account so that they remain different from your main account.  The tax to be paid depending on your income slab. The additional income needs to added to you salary. The tax and slabs will be as per this. There is no distinction on this amount. Its treated as normal income. All Tax for the given year has to be paid in advance. i.e. for Tax year 2013-14, 30% of total tax by 15-Sept, Additional 30% [total 60%] by 15-Dec and Balance by 15-Mar. Read Page 3 and page 10 of http://incometaxindia.gov.in/Archive/Taxation_Of_Salaried_Employees_18062012.pdf "Can I use the foreign earned income exclusion in my situation? Only partially, since the days you spent in the US should be excluded. You'll have to prorate your exclusion limit, and only apply it to the income earned while not in the US. If not, how should I go about this to avoid being doubly taxed for   2014? The amounts you cannot exclude are taxable in the US, and you can use a portion of your Norwegian tax to offset the US tax liability. Use form 1116 for that. Form 1116 with form 2555 on the same return will require some arithmetic exercises, but there are worksheets for that in the instructions. In addition, US-Norwegian treaty may come into play, so check that out. It may help you reduce the tax liability in the US or claim credit on the US taxes in Norway. It seems that Norway has a bilateral tax treaty with the US, that, if   I'm reading it correctly, seems to indicate that ""visiting researchers   to universities"" (which really seems like I would qualify as) should   not be taxed by either country for the duration of their stay. The relevant portion of the treaty is Article 16. Article 16(2)(b) allows you $5000 exemption for up to a year stay in the US for your salary from the Norwegian school. You will still be taxed in Norway. To claim the treaty benefit you need to attach form 8833 to your tax return, and deduct the appropriate amount on line 21 of your form 1040. However, since you're a US citizen, that article doesn't apply to you (See the ""savings clause"" in the Article 22). I didn't even give a thought to state taxes; those should only apply   to income sourced from the state I lived in, right (AKA $0)? I don't know what State you were in, so hard to say, but yes - the State you were in is the one to tax you. Note that the tax treaty between Norway and the US is between Norway and the Federal government, and doesn't apply to States. So the income you earned while in the US will be taxable by the State you were at, and you'll need to file a ""non-resident"" return there (if that State has income taxes - not all do)." There's nothing wrong with your reasoning except that you expect the tax laws to make perfect sense. More often than not they don't. I suggest getting in touch with a professional tax preparer (preferably with a CPA or EA designation), who will be able to understand the issue, including the relevant portions of the French-US tax treaty, and explain it to you. You will probably also need to do some reporting in France, so get a professional advice from a French tax professional as well. So, in my tax return, can I say that I had no US revenue at all during   this whole year? I doubt it. As per Indian tax laws; income, expense, gain and loss constitute the basic pillars of every individual’s economic life. There are very few cases under which this new 'income' is non taxable. Based on the circumstances, you might have to pay capital gains tax.