Tax brackets in the US
"Yes, your tax bracket is 25%.  However, that doesn't mean that your take home pay will be 75% of your salary.  There is much more that goes into figuring out what your take home pay will be. First, you have payroll taxes.  This is often listed on your pay stub as ""FICA.""  The Social Security portion of this tax is 6.2% on the first $118,500 of your pay and the Medicare portion is another 1.45% on the first $200,000.  (Your employer also has to pay additional tax that does not appear on your stub.)  So 7.65% of your salary gets removed off the top. In addition to the federal income taxes that get withheld, you may also have state income taxes that get withheld.  The amount varies with each state. Also, the 25% tax bracket does not mean that your tax is 25% of your entire salary.  You step through the tax brackets as your income goes up.  So part of your salary is taxed at 10%, part at 15%, and the remainder is at 25%. The amount of federal income tax that is withheld from your paycheck is really a rough estimate of how much tax you actually owe.  There are lots of things that can reduce your tax liability (personal exemptions, deductions, credits) or increase your tax (investment income, penalties).  When you do your tax return, you calculate the actual tax that you owe, and you either get a refund if too much was taken out of your check, or you need to send more money in if too little was taken out." I suggest taking a look at your pay stub or pay statement. Your employer should provide you with one for each time you get paid. This shows your gross income (pay period and year to date or YTD for short) and all stuff that gets deducted and how your actual payment is calculated. In my case there are nine things that get taken off: Other things that might show up there are various life or accident insurances, Child Care flexible spending account, legal & pet insurances, long term disability, etc. Some of those are under your control (through benefit election or contribution choices), others you just have to live with. Still, it's worth spending the time to look at it occasionally.
Yes your basic math is correct. If your tax bracket never changes, then either type of retirement account will end up in the same place. Assuming that there are no income restrictions that will limit your ability to contribute to the type of account you want. Now your job is to guess what your tax bracket will be each and every year for the next 3 or 4 decades. Events that will influence your bracket: getting married; having children; buying a house; selling a house; paying for college; the cost of medical care; moving to a state with a different state tax structure. Of course that assumes that you don't get a big bonus one year or that congress changes the tax brackets. That is why many people have both types of retirement accounts: Roth and non-Roth. Owing taxes to two or more levels of government isn't double taxation. It's a feature of the American union. I'm not for this bill in general, mostly for the timing and the loss of the highest bracket, but both the state and federal governments have to generate revenue, and basing rates on pure incomes with a few loopholes as possible is the most progressive way to do it. By owing taxes unadjusted for other taxes paid, there's more incentive for states to lower local taxes and to balance state programs with federal programs, and for state reps to more fairly redistribute federal transfers instead of targeting states with (usually artificially) low local taxes and fewer state programs (usually Republican). No.  In a marginal tax system, only additional dollars that push you into a higher bracket are taxed at that higher rate.  If you would pay 15% on $73800, then when you earn over $73800, you will still only pay 15% of the $73800, plus 25% of the extra amount over $73800.  As far as a marginal income tax affects things, you cannot decrease your net income by increasing your salary.  (There can be other potential reasons to keep your income down besides income taxes, as asked in this question, but as the answer there suggests, these often aren't great reasons either.) As far as I know, every income tax system that has differing tax rates works this way.  That is, I'm not aware of any country with an income tax system where you can decrease your net earnings by moving into a higher bracket. "It starts here -  You said you are a high earner, but high is relative. This tax table will show what marginal rate you have for your taxable income. Look at your 2015 return to get a better idea what ""taxable"" means, vs gross income. For starters, with a standard deduction, and just the two of you, $20K comes off your gross. Even so, let's assume you are in the marginal 25% bracket.  The W4 form does offer instructions on how to calculate how much extra to withhold, but, to your point (and brilliant criticism of the process) withholding is not available as a percent, only as normal withholding, i.e. if spouse's income were a flat, predictable number, or as an extra, fixed, number, per check.  You shared with us in your other question she expects to earn $7K-$15K. The average of these 2 numbers is $11K, which at 25%, is $2750. I'd divide that over the number of checks remaining this year (20?) and just withhold that much extra. Use your tax software from last year or an online calculator and in 3 months, see if you are on track. You can adjust the W4 any time to get as close to the actual total year tax due as you'd like. My answer focuses on the 'adjust repeatedly,' part of keshlam's own answer. His quarterly payments suggestion also works and you might prefer it. In general, mine would only take 1-2 adjustments per year at most.  If you withhold too much, as most people seem to do, you'll get it back when you file. But, worst case, you withhold $3750 and she makes just $8000. This is $1750 too much. The average refund is over $3000. Too little, and mhoran's answer explains when you'd owe a penalty." The key there is Large companies.  The vast majority of companies in the US are small businesses with little or no international presence, and are taxed at the full 35%.  Their very large competitors, however, have the ability to flout US corporate taxes, and therefore keep more of their profits - whether in terms of retained earnings or higher dividends to shareholders. Most countries with income tax, including the USA, design their withholding system so that in straightforward cases, tax is withheld from each month's paycheck on an annualized basis: tax for a month is calculated on the assumption that you will keep earning the same monthly amount for the rest of the year, and the withholding is set so that the tax is spread evenly across the year. Another way of putting that is that in practice you only get the tax brackets allocated proportionately throughout the year - so up till the end of August you'll only have been assigned 8/12 of the $37450 bracket, and so on. So if your income doesn't change and your general tax affairs don't change, your paycheck also shouldn't change. If your income is irregular or changes during the year then things can get more complicated. As other answers have noted, withholdings are calculated according to tables that normally just take into account that specific month's income. There are various possible changes to your tax affairs that might cause the withholdings to change. For example there'd be an impact from any change in your contributions to tax advantaged things like health insurance or retirement, health or education savings. You might also use form W-4 to change your withholdings yourself. Note that even with a regular income that doesn't change through the year, you might find yourself either owing money or being owed a refund when you file your taxes after the end of the year. It's worth making sure that your W-4 accurately records the allowances you are entitled to, to minimize or eliminate this adjustment. You're right about FICA (I forgot it is calculated on gross income and not Adjusted Gross Income). State tax rate in that bracket still should be nominal or zero depending on the state. Sales tax... things cost what they cost.  &gt; Regardless, 70% of minimum wage isn't enough to cover a car, a child, a good vacation, a serious health care problem, an aging parent, or a modest retirement.  Social safety nets are impossible to address via a minimum wage. You could make the minimum wage $30/hr and some people will still become bankrupt by our ridiculous healthcare system. Why not lobby for single-payer healthcare and a universal basic income like $1000/mo/adult and $500/mo/child? "The scenario you mention regarding capital gains is pretty much the core of the issue. Here's a run-down from PolitiFact.com that explains it a bit. It's important to focus on it being the tax rate, not the tax amount (which I think you get, but I want to reinforce that for other readers).  Basically, most of Buffett's income comes from capital gains and   dividends, income from investments he makes with the money he already   has. Income earned by buying and selling stocks or from stock   dividends is generally taxed at 15 percent, the rate for long-term   capital gains and qualified dividends. Buffett also mentioned that some of the ""mega-rich"" are hedge fund   managers ""who earn billions from our daily labors but are allowed to   classify our income as 'carried interest,' thereby getting a bargain   15 percent tax rate."" We don't know the taxes paid by Buffett's secretary, who was mentioned   by Obama but not by Buffett. Buffet's secretary would have to make a   high salary, or else typical deductions (such as the child tax credit)   would offset taxes owed. Let's say the secretary is a particularly   well-compensated executive assistant, making adjusted income more than   $83,600 in income. (Yes, that sounds like a lot to us, too, but   remember: We're talking about the secretary to one of the richest   people in the world.) In that case, marginal tax rates of 28 percent   would apply. Then, there would be payroll taxes of 6.25 percent on the   first $106,800, money that goes to Social Security, and another 1.45   percent on all income, which goes to Medicare. The secretary’s overall   tax rate would be lower than 28 percent, since not all the income   would be taxed at that rate, only the income above $83,600. Buffett, meanwhile, would pay very little, if anything, in payroll   taxes. In the New York Times op-ed, Buffett said he paid 17.4 percent   in taxes. Thinking of the secretary, it gets a little complicated,   given how the tax brackets work, but basically, people who make   between $100,000 and $200,000 are paying around 20 percent in federal   taxes, including payroll and income taxes, according to an analysis   from the nonpartisan Tax Policy Center. So in this case, the secretary's rate is higher because so much of   Buffett's income comes from investments and is taxed at the lower   capital gains rate. Here's Buffet's original Op-Ed in the NYT for those of you that aren't familiar." Wow 35% I never realized that the American corporate tax rate was so high.  In my province in Saskatchewan Canada I pay 13%(as the owner of a small corporate business).  It's no wonder American corporations want to move.   Does it not make more sense to lower the corporate tax rate while reducing loop holes etc... to make the American corporation more competitive.  Just my 2c You can file a revised W-4 with your employer claiming more allowances than you do now. More allowances means less Federal tax and (if applicable and likely with a separate form) less state tax. This doesn't affect social security and Medicare with holding, though.  That being said, US taxes are on a pay-as-you-go system. If the IRS determines that you're claiming more allowances than you're eligible for and not paying the proper taxes throughout the year, they will hit you with an underpayment penalty fee, which would likely negate the benefits of keeping that money in the first place. This is why independent contractors and self-employed people pay quarterly or estimated taxes. Depending on the employer, they may require proof of the allowances for adjustment before they accept the revised W-4. "Does your spouse work? That's one factor that can put your income into a higher bracket. The one difference to note is you will pay 2x the social security portion, so even though not ""federal"" tax, its right off the top nearly 13%. I'm not familiar with your states tax. It's really worth dropping the $75 on a copy of the software and running your own exact numbers." This will work as intended, but there's another point to consider. In the US, the tax rate on proceeds from stock sales is higher for short term holdings, which are defined as held for less than one year. Both rates vary based on your income. Bracket numbers are for fiscal year 2014, filing as single. The difference between short and long term capital gains tax in the US is a minimum of ten percentage points, and works out to 15 percentage points on average. This is substantial. If you won't be reporting much income the year you move to the US (say because you only worked for a portion of the year) it is decidedly to your advantage to wait and sell the stocks in the US, to get that sweet 0% rate. At a minimum, you should hold the position for a year if you sell and rebuy, from a tax optimization perspective. Two caveats: With your income so high, your marginal tax rate should be pretty easy to determine.  You are very likely in the 33% tax bracket (married filing jointly income range of $231,450 to $413,350), so your wife's additional income will effectively be taxed at 33% plus 15% for self-employment taxes. Rounding to 50% means you need to withhold $19,000 over the year (or slightly less depending on what business expenses you can deduct). You could use a similar calculation for CA state taxes. You can either just add this gross additional amount to your withholdings, or make an estimated tax payment every quarter.  Any difference will be made up when you file your 2017 taxes. So long as you withhold 100% of your total tax liability from last year, you should not have any underpayment penalties. Tax brackets refer to the range of taxable within which you fall. An income tax bracket usually refers to federal or state tax, not the combined rate. I have put here the tax brackets for 2016 for IRS and State of California.  https://www.irs.com/articles/2016-federal-tax-rates-personal-exemptions-and-standard-deductions  https://www.ftb.ca.gov/forms/2016-california-tax-rates-and-exemptions.shtml According to those, a taxable income of 100,000USD would fall in the 28% bracket for the IRS and 9.30% for State of California. The combined rate is therefore 37.3%. However, this does not mean you would pay 37,300USD. First of all, your applicable tax rate applies only for each dollar in your tax bracket (e.g. 28% * 8,849USD for IRS). Therefore, to calculate your combined taxes you would need to do:  Therefore, your effective tax rate would be much lower than the combined tax rate of 37.3%. Now do note that this is an example to illustrate tax brackets and is nowhere near the amount of taxes you would be required to pay because of various credits and deductions that you would be able to benefit from. Edit: As suggested in the comments, a note on marginal tax rate (referred to here as combined tax rate). This is the rate of taxes paid on an additional dollar of income. Here, every additional dollar of income would be taxed at 37.3%, leaving you with 62.7 cents. "There are a couple of things that are missing from your estimate. In addition to your standard deduction, you also have a personal exemption of $4050.  So ""D"" in your calculation should be $6300 + $4050 = $10,350. As a self-employed individual, you need to pay both the employee and employer side of the Social Security and Medicare taxes.  Instead of 6.2% + 1.45%, you need to pay (6.2% + 1.45%) * 2 = 15.3% self-employment tax. In addition, there are some problems with your calculation. Q1i (Quarter 1 estimated income) should be your adjusted annual income divided by 4, not 3 (A/4). Likewise, you should estimate your quarterly tax by estimating your income for the whole year, then dividing by 4.  So Aft (Annual estimated federal tax) should be: Quarterly estimated federal tax would be: Qft = Aft / 4 Annual estimated self-employment tax is: Ase = 15.3% * A with the quarterly self-employment tax being one-fourth of that: Qse = Ase / 4 Self employment tax gets added on to your federal income tax.  So when you send in your quarterly payment using Form 1040-ES, you should send in Qft + Qse. The Form 1040-ES instructions (PDF) comes with the ""2016 Estimated Tax Worksheet"" that walks you through these calculations."