Can a husband and wife who are both members of the same LLC file a joint tax return?
Since from the question it seems that you're talking about the US taxation, I'll assume that. You can definitely continue filing jointly. Being members of a partnership has no bearing on how you file your own tax return. The partnership will distribute K-1 to each of you separately, but you'll report both of them on the same return.
As @littleadv's comment on your question said, it is unlikely that you and your husband paid a total of $5K in income tax on $185K of wages in 2013. More likely, your 2013 tax return (assumed to be a Married Filing Jointly tax return) showed that you had not arranged to have  enough tax withheld from your salaries and thus you still owed $5K  to the IRS for 2013 taxes. Most likely, that $5K sum included not just the unpaid amount of tax but also  penalties for not paying enough income tax during 2013 and interest on the amounts not paid on time.  Just to be clear, note that the income tax you paid for 2013 during 2013 is the total of all income tax withheld from your wages by your employers (plus any estimated tax payments that you might have made for 2013). If your 2014 tax return (that you will be filing by April 15, 2015)  will likely show a similar amount due for 2014 taxes, you can avoid  the penalties and interest by increasing  your income tax withholding by a substantial amount for the remainder of 2014. If you are paid monthly and have two paychecks still to be received, then having $2500 extra withheld from each paycheck will cover the $5K shortfall that you expect to have for 2014 taxes. I assume that this is what your husband intended you to do, and to do  this, you need to fill out a new W-4 Form (asking that an addiitonal  $2500 be withheld from each paycheck) and give this form to your employer soon (i.e. well before Payroll processes your next paycheck which usually happens a few days before you get the paycheck).  If you do so, your take-home pay will be reduced by $2500 on each of the next two monthly paychecks because your employer will withhold this extra amount from your pay and include it in the amount sent to the IRS as income tax withheld from your paycheck. After your last paycheck for 2014 has been received, you should submit a new W-4 Form to your asking for only $417 in extra income tax to be withheld from each paycheck starting January 1, 2015, so that  the expected $5K shortfall for 2015 is paid in 12 equal monthly installments. If you neglect to do this, your employer will continue to withhold $2500 extra as income tax, and you will get $2500 less in take-home pay month after month in 2015. This money will not disappear forever; come 2016 when you file your income tax return for 2015, you will receive a substantial refund because you overpaid income tax by a lot during 2015. You will not, however, receive any interest on the amount that the IRS is returning to you unless the IRS delays in sending you the refund for some reason.  Alternatively, you can file a new W-4 asking for no additional tax to be withheld from 2015 paychecks, and a year from now, go through the same exercise as above: have $2500 extra withheld from the last two paychecks for 2015, right when the holidays are coming and people are shopping for gifts. Both states will want to tax you. Your tax home is where you maintain a domicile, are registered to vote, etc. and you will probably want to keep this as MA since you state that MA is your permanent residence and you are staying in a rented place in PA. But be careful about voter registration; that is one of the items that can be used to determine your state of residence.  OK, so if you and your spouse are MA residents,  you should file jointly as residents in MA and as nonresidents in PA. Do the calculations on the nonresident return first, and then the calculations on the resident  return. Typically, on a nonresident tax return, the calculations are effectively the following: Report all your income (usually AGI from the Federal return).  Call this $X. Compute the PA state tax due on $X.  Note that you follow the rules for nonresidents in doing this, not the calculations used by PA residents. Call the amount of tax you computed as $Y. What part of the total income $X is attributable to PA sources? If this amount is $Z, then you owe PA $Y times (Z/X). On the resident return in MA, you will likely get some credit for the taxes paid to PA, and this will reduce your MA tax burden. Usually the maximum credit is limited to the lesser of actual tax paid to PA and what you would have had to pay MA for the same income. As far as withholding is concerned, your employer in PA will withhold PA taxes as if you are a PA resident, but you can adjust the amount via the PA equivalent of IRS Form W4 so as to account for any additional  tax that might be due because you will be filing as a nonresident.  Else you can pay estimated taxes via the PA equivalent of IRS Form 1040ES. Similarly, your wife can adjust her withholding to account for the MA taxes that you will owe on the joint income, or you can pay estimated taxes to MA too. Note that it is unlikely that your employer in Pennsylvania will withhold  Massachusetts taxes (and send them to Massachusetts) for you, e.g. if it is a ma-and-pa store, but there may be special deals available if  your employer does business in both states, i.e. is a MA-and-PA store. If you have a single-member LLC that is treated as a disregarded entity (i.e. you didn't elect to be taxed as a corporation), and that LLC had no activity, you're off the hook for federal reporting. The LLC's activity would normally be reported on your personal tax return on a Schedule C. If the LLC had under $400 in taxable earnings, no Schedule C is needed. So an inactive LLC does not have a tax reporting requirement. (If you had taxable income but under $400, you include that amount on your 1040 but don't need a Schedule C.) In Texas, you still must file a Texas franchise tax report every year, even for a single-member LLC with no activity. Delaware LLC requires that each business entity have and hold an enterprise Registered in the State of Delaware who can be both a character resident or enterprise entity this is legal to do business in the  Wilmington, Delaware. the Delaware LLC has offered the same asset protections and tax advantages that a corporation offers. Often the LLC is the simpler, more flexible choice for small businesses. This small amount of required information not only makes it easy to start an LLC in Delaware, but it also helps to keep your identity and personal information secure. There would be no point to claim the gift exemption because a gift from a spouse that you file jointly with wouldn't be considered income. It would be the same as if you moved money from one bank account to another. Payment of taxes for your personal return filed with the IRS always come from your personal account, regardless of how the money was earned. Sales tax would be paid from your business account, so would corporate taxes, if those apply; but if you're talking about your tax payments to the IRS for your personal income that should be paid from your personal account. Also, stating the obvious, if you're paying an accountant to handle things you can always ask them for clarification as well. They will have more precise answers. EDIT Adding on for your last part of the question I missed:  In virtually all cases LLC's are what's called a pass through entity.  For these entities, all income in the eyes of the federal government passes directly through the entity to the owners at the end of each year.  They are then taxed personally on this net income at their individual tax rate, that's the very abridged version at least. The LLC pays no taxes directly to the federal government related to your income. Here's a resource if you'd like to learn more about LLC's: http://www.nolo.com/legal-encyclopedia/llc-basics-30163.html "In a word, no. If your income is high enough to have to file a return, you have to file a return. My accountant has a nice mindset for making it more palatable. I'll paraphrase: ""Our tax system is ludicrously complicated. As a result, it is your duty as an American to seek out and take advantage of every deduction and credit available to you. If our politicians and leaders put it into the tax code, use it to your advantage."" A friend of mine got a free golf cart that way. It was a crazy combination of credits and loopholes for electric vehicles. That loophole has been closed, and some would say it's a great example of him exercising his patriotic duty." "There are two different issues that you need to consider: and The answers to these two questions are not always the same.  The answer to the first is described in some detail in Publication 17 available on the IRS website. In the absence of any details about your situation other than what is in your question (e.g. is either salary from self-employment wages that you or your spouse is paying you,  are you or your spouse eligible to be claimed as a dependent by someone else, are you an alien, etc),  which of the various rule(s) apply to you cannot be determined, and so I will not state a specific number or confirm that what you assert in your question is correct.  Furthermore, even if you are not required to file an income-tax return, you might want to choose to file a tax return anyway. The most common reason for this is that if your employer withheld  income tax from your salary (and sent it to the IRS on your behalf) but your tax liability for the year is zero, then, in the absence of a filed tax return, the IRS will not refund the tax withheld to you. Nor will your employer return the  withheld money to you saying ""Oops, we made a mistake last year"".  That money is gone: an unacknowledged (and non-tax-deductible) gift  from you to the US government. So, while ""I am not required to file an income tax return and I refuse to do voluntarily what I am not  required to do""  is a very principled stand to take, it can have monetary consequences. Another reason to file a tax return even when one is not required to do so is to claim the Earned Income Tax Credit (EITC) if you qualify for it. As Publication 17 says in Chapter 36, qualified persons must File a tax return, even if you:   (a) Do not owe any tax,   (b) Did not earn enough money to file a return,   or   (c) Did not have income taxes withheld from your pay. in order to claim the credit. In short, read Publication 17 for yourself, and decide whether you are required to file an income tax return, and if you are not, whether it is worth your while to file the tax return anyway. Note to readers preparing to down-vote: this answer is prolix and says things that are far too ""well-known to everybody"" (and especially to you), but please remember that they might not be quite so well-known to the OP."