Is per diem taxable?
Per-diem is not taxable, if all the conditions are met. Conditions include: You can find this and more in this IRS FAQ document re the per-diem.
Since your comment on @JoeTaxpayer's answer says that you are still under the 2012 contribution limits if the extra money is left in your 401k account, I do not think  that there is any problem for you if the money is left in the 401k account. As I understand it, your salary is $X for 2012 of which you contribute some percentage per paycheck to your 401k account. Your contributions  would have totaled $Y for 2012 if the glitch of extra money being out into your 401k account had not occurred. In the absence of the glitch, your W-2 form would have reported $X as gross wages, $(X-Y) as taxable wages and $Y as 401k contributions. Since an additional $z has been put into your 401k account, but not deducted from your paycheck, your employer could do one of two things. The extra money could be withdrawn from your 401k account by your employer. If this is done, then your W-2 form will be as described above. The extra money is not withdrawn by your employer. Your W-2 form will still report $(X-Y) as taxable wages, but $(Y+z) as the 401k contribution and $(X+z) as gross wages. Since $(Y+z) is less than the maximum 2012 contribution, everything is fine. In your position, I would very much prefer the latter alternative over the former, not just because there is a larger contribution to the 401k account with no change in tax liability, but also because there is always the possibility that HR/Payroll will screw up the withdrawal of the excess contribution so that it appears as a premature withdrawal by the participant. In this case,  the participant not only has to pay income tax on $z but also a 10% excise tax for premature withdrawal, without actually  getting even a penny from that $z taken out, which will go right back into the employer's coffers. "You cannot get ""your investment"" out and ""leave only the capital gains"" until they become taxable at the long-term rate. When you sell some shares after holding them for less than a year, you have capital gains on which you will have to pay taxes at the short-term capital gains rate (that is, at the same rate as ordinary income).  As an example, if you bought 100 shares at $70 for a net investment of $7000, and sell 70 of them at $100 after five months to get your ""initial investment back"", you will have short-term capital gains of $30 per share on the 70 shares that you sold and so you have to pay tax on that $30x70=$2100. The other $4900 = $7000-$2100 is ""tax-free"" since it is just your purchase price of the 70 shares being returned to you.  So after paying the tax on your short-term capital gains, you really don't have your  ""initial investment back""; you have something less. The capital gains on  the 30 shares that you continue to hold will become (long-term capital gains) income to you only when you sell the shares after having held them for a full year or more: the gains on the shares sold after five months are taxable income in the year of sale." The IRS Guidance pertaining to the subject.  In general the best I can say is your business expense may be deductible.  But it depends on the circumstances and what it is you want to deduct. Travel Taxpayers who travel away from home on business may deduct related   expenses, including the cost of reaching their destination, the cost   of lodging and meals and other ordinary and necessary expenses.   Taxpayers are considered “traveling away from home” if their duties   require them to be away from home substantially longer than an   ordinary day’s work and they need to sleep or rest to meet the demands   of their work. The actual cost of meals and incidental expenses may be   deducted or the taxpayer may use a standard meal allowance and reduced   record keeping requirements. Regardless of the method used, meal   deductions are generally limited to 50 percent as stated earlier.    Only actual costs for lodging may be claimed as an expense and   receipts must be kept for documentation. Expenses must be reasonable   and appropriate; deductions for extravagant expenses are not   allowable. More information is available in Publication 463, Travel,   Entertainment, Gift, and Car Expenses. Entertainment Expenses for entertaining clients, customers or employees may be   deducted if they are both ordinary and necessary and meet one of the   following tests: Directly-related test: The main purpose of the entertainment activity is the conduct of business, business was actually conducted   during the activity and the taxpayer had more than a general   expectation of getting income or some other specific business benefit   at some future time.   Associated test: The entertainment was associated with the active conduct of the taxpayer’s trade or business and occurred directly   before or after a substantial business discussion. Publication 463 provides more extensive explanation of these tests as   well as other limitations and requirements for deducting entertainment   expenses. Gifts Taxpayers may deduct some or all of the cost of gifts given in the   course of their trade or business. In general, the deduction is   limited to $25 for gifts given directly or indirectly to any one   person during the tax year. More discussion of the rules and   limitations can be found in Publication 463. If your LLC reimburses you for expenses outside of this guidance it should be treated as Income for tax purposes. Edit for Meal Expenses: Amount of standard meal allowance.   The standard meal allowance is   the federal M&IE rate. For travel in 2010, the rate for most small   localities in the United States is $46 a day. Source IRS P463 Alternately you could reimburse at a per diem rate "a link to this article grabbed my Interest as I was browsing the site for something totally unrelated to finance.  Your question is not silly - I'm not a financial expert, but I've been in your situation several times with Carmax Auto Finance (CAF) in particular. A lot of people probably thought you don't understand how financing works - but your Car Loan set up is EXACTLY how CAF Financing works, which I've used several times. Just some background info to anyone else reading this - unlike most other Simple Interest Car Financing, with CAF, they calculate per-diem based on your principal balance, and recalculate it every time you make a payment, regardless of when your actual due date was.  But here's what makes CAF financing particularly fair - when you do make a payment, your per-diem since your last payment accrued X dollars, and that's your interest portion that is subtracted first from your payment (and obviously per-diem goes down faster the more you pay in a payment), and then EVerything else, including Any extra payments you make - goes to Principal. You do not have to specify that the extra payment(S) are principal only. If your payment amount per month is $500 and you give them 11 payments of $500 - the first $500 will have a small portion go to interest accrued since the last payment - depending on the per-diem that was recalculated, and then EVERYTHING ELSE goes to principal and STILL PUSHES YOUR NEXT DUE DATE (I prefer to break up extra payments as precisely the amount due per month, so that my intention is clear - pay the extra as a payment for the next month, and the one after that, etc, and keep pushing my next due date). That last point of pushing your next due date is the key  - not all car financing companies do that. A lot of them will let you pay to principal yes, but you're still due next month. With CAF, you can have your cake, and eat it too. I worked for them in College - I know their financing system in and out, and I've always financed with them for that very reason.  So, back to the question - should you keep the loan alive, albeit for a small amount. My unprofessional answer is yes! Car loans are very powerful in your credit report because they are installment accounts (same as Mortgages, and other accounts that you pay down to 0 and the loan is closed). Credit cards, are revolving accounts, and don't offer as much bang for your money - unless you are savvy in manipulating your card balances - take it up one month, take it down to 0 the next month, etc. I play those games a lot - but I always find mortgage and auto loans make the best impact.  I do exactly what you do myself - I pay off the car down to about $500 (I actually make several small payments each equal to the agreed upon Monthly payment because their system automatically treats that as a payment for the next month due, and the one after that, etc - on top of paying it all to principal as I mentioned).  DO NOT leave a dollar, as another reader mentioned - they have a ""good will"" threshold, I can't remember how much - probably $50, for which they will consider the account paid off, and close it out. So, if your concern is throwing away free money but you still want the account alive, your ""sweet spot"" where you can be sure the loan is not closed, is probably around $100.  BUT....something else important to consider if you decide to go with that strategy of keeping the account alive (which I recommend). In my case, CAF will adjust down your next payment due, if it's less than the principal left. SO, let's say your regular payment is $400 and you only leave a $100, your next payment due is $100 (and it will go up a few cents each month because of the small per-diem), and that is exactly what CAF will report to the credit bureaus as your monthly obligation - which sucks because now your awesome car payment history looks like you've only been paying $100 every month - so, leave something close to one month's payment (yes, the interest accrued will be higher - but I'm not a penny-pincher when the reward is worth it - if you left $400 for 1.5 years at 10% APR - that equates to about $50 interest for that entire time - well worth it in my books. Sorry for rambling a lot, I suck myself into these debates all the time :)" If you are the beneficiary of an annuity, you might receive a single-sum distribution when the annuity owner dies. The amount of this death benefit might be the current cash value of the annuity or some other amount based upon contract riders that the owner purchased. The tax on death benefits depends on a number of factors. Death benefits are taxed as normal income. Unlike other investments, the named beneficiary of a non-qualified annuity does not get a step-up in tax basis to the date of death. However, that doesn't mean the beneficiary will have to pay taxes on the full amount. Because the purchaser of the annuity made the investment with after-tax dollars, only the amount attributable to investment income is taxed, but it will be taxed as ordinary income and not enjoy any special capital gains treatment. When there is a death benefit that exceeds the value of the account, that additional amount is also taxed as ordinary income.  Taxes on annuities depend on several circumstances: For more information on distribution of inherited annuities and taxes - go to Annuities HQ-- http://www.annuitieshq.com/articles/distribution-options-inherited-annuity/ they go into details that could help you even more.  One thing that Annuities HQ points out is if you take the lump sum payout, you may be pushed into a higher tax bracket.  Along with doing research I would also contact a financial advisor! This answer is assuming you're in the US, which apparently you're not. I doubt that the rules in the EU are significantly different, but I don't know for sure. In case of an IRS control, is it ok to say that I regularly connect   remotely to work from home although in the work contract it says I   must work at client's office? No. Are there any other ways I can prove that this deduction is valid? No. You can't prove something is valid when its not. You can only deduct home office expense if it is used exclusively for your business, and your bedroom obviously is not. "In most jurisdictions, both the goods (raw materials) and the service (class) are being ""sold"" to the customer, who is the end user and thus the sale is subject to sales tax. So, when your friend charges for the class, that $100 is subject to all applicable sales taxes for the jurisdiction and all parent jurisdictions (usually city, county and state). The teacher should not have to pay sales tax when they buy the flowers from the wholesaler; most jurisdictions charge sales tax on end-user purchases only. However, they are required to have some proof of sales tax exemption for the purchase, which normally comes part and parcel with the DBA or other business entity registration paperwork in most cities/states.  Wholesalers deal with non-end-user sales (exempt from sales tax) all the time, but your average Michael's or Hobby Lobby may not be able to deal with this and may have to charge your friend the sales tax at POS. Depending on the jurisdiction, if this happens, your friend may be able to reduce the amount the customer is paying that is subject to sales tax by the pre-tax value of the materials the customer has paid for, which your friend already paid the tax on." "Taxability depends on residential status when the $ were earned. If it was earned during his status as ""Non-Resident"" in India, then its tax free. If the money was earned when his tax status was resident in India, then its taxable as per the tax bracket. Edit: Taxability does not depend on whether to transfer the money into India, or keep it out of India or bring it as Cash or Electronically. It only depends on NRI status. Of course transferring the funds into NRE makes the paperwork simpler in case there is a scrutiny."