How to allocate profit and loss in partnership where one partner's activities are profitable and the other's aren't?
You should have a partnership agreement of some sort.  The reason partnership agreements exist is so nobody can change the game because of the outcome.   I'd say the most typical partnership agreement is that everyone gets an equal cut, meaning that everyone also makes an equal contribution.  If you have start up expenses of $10,000, you'd each contribute $5,000.  Separately, you can determine ownership share by contribution amounts, maybe one of you contributed $2,000 and the other $8,000; this would be an 80/20 split. The performance of the operation doesn't have anything to do with determining how to divide the pie, your partnership agreement determines that.  How much have you each contributed and what agreement did you make before you decided to be partners? If you have a poor performing business segment, then the partnership should get together and consider adjusting or stopping that line of business.  But you don't change how the pie is divided because of it; unless your partnership agreement says you do.
"The blue line is illustrating the net profit or loss the investor will realise according to how the price of the underlying asset settles at expiry. The x-axis represents the underlying asset price.  The y-axis represents the profit or loss. In the first case, the investor has a ""naked put write"" position, having sold a put option.  The strike price of the put is marked as ""A"" on the x-axis.  The maximum profit possible is equal to the total premium received when the option contract was sold.  This is represented by that portion of the blue line that is horizontal and extending from the point above that point marked ""A"" on the x-axis.  This corresponds to the case that the price of the underlying asset settles at or above the strike price on the day of expiry.  If the underlying asset settles at a price less than the strike price on the day of expiry, then the option with be ""in the money"".  Therefore the net settlement value will move from a profit to a loss, depending on how far in the money the option is upon expiry.  This is represented by the diagonal line moving from above the ""A"" point on the x-axis and moving from a profit to a loss on the y-axis.  The diagonal line crosses the x-axis at the point where the underlying asset price is equal to ""A"" minus the original premium rate at which the option was written - i.e., net profit = zero.  In the second case, the investor has sold a put option with a strike price of ""B"" and purchase a put option with a strike price ""A"", where A is less than B.  Here, the reasoning is similar to the first example, however since a put option has been purchase this will limit the potential losses should the underlying asset move down strongly in value. The horizontal line above the x-axis marks the maximum profit while the horizontal line below the x-axis marks the maximum loss. Note that the horizontal line above the x-axis is closer to the x-axis that is the horizontal line below the x-axis.  This is because the maximum profit is equal to the premium received for selling the put option minus the premium payed for buying the put option at a lower strike price.  Losses are limited since any loss in excess of the strike price ""A"" plus the premium payed for the put purchased at a strike price of ""A"" is covered by the profit made on the purchased put option at a strike price of ""A""." Your post seems to read as if you want to invest only in real estate rental properties as a start because they will be a reliable investment guaranteed to generate profits that you will be plowing back into buying even more rental properties, but you are willing to consider (possibly in later years) other forms of investment (in real estate) that will not require active  participation in the management of the rental properties. While many participants here do own rental real estate and even manage it entirely, for most people, that is only a small part of their investment portfolio, and I suspect that hardly any will recommend real estate as the only investment the way you seem to want to do. Also, you might want to look more closely at the realities of rental real estate  operations before jumping in. Things are not necessarily as rosy as they appear to you now.  Not all your units will be rented all the time, and the rental income might not always be enough to cover the mortgage payments and the property taxes and the insurance payments and the repairs and maintenance and ... Depreciation of the property is another matter that you might not have thought about. That being said, you can invest in real estate through real estate investment trusts (REITs) or through limited partnerships where you have only a passive role.  There are even mutual funds that invest in REITs or in REIT indexes. "Get everything in writing. That includes ownership %, money in, money out, who is allowed to use the place, how much they need to pay the other partners, who pays for repairs, whether to provide 'friends and family' discounts, who is allowed to sell, what happens if someone dies, how is the mortgage set up, what to do if one of you becomes delinquent, etc. etc. etc. Money and friends don't mix. And that's mostly because people have different ideas in their head about what 'fair' means. Anything you don't have in writing, if it comes up in a disagreement, could cause a friendship-ending fight. Even if you are able to agree on every term and condition under the sun, there's still a problem - what if 5 years from now, someone decides that a certain clause isn't fair? Imagine one of you needs to move into the condo because your primary residence was pulled out from under you. They crash at the condo because they have no where else to go. You try to demand payment, but they lost their job. The agreement might say ""you must pay the partnership if you use the condo personally, at the standard monthly rate * # of days"". But what is the penalty clause - is everything under penalty of eviction, and forced sale of the condo and distribution of profits? Following through on such a penalty means the friendship would be over. You would feel guilty about doing it, and also about not doing it [at the same time, your other partner loses their job, and can't make 1/3rd of the mortgage payments anymore! They need the rent or the bank will foreclose on their house!] etc etc etc Even things like maintenance - are the 3 of you going to do it yourselves? Labour distributed how? Will anyone get a management fee? What about a referral fee for a new renter? Once you've thought of all possible circumstances and rules, and drafted it in writing, go talk to a lawyer, and maybe an accountant. There will be many things you won't have considered yet, and paying a few grand today will save you money and friends in the future." If the business activities are closely related you could combine them into a single Schedule C, but in your case it sounds like it should be two separate Schedule C's. The loss from one will offset profit from the other, and your self-employment and income taxes will be based on the net of the two businesses. Any business can generate losses, make sure your expenses are reasonable and documented, there are plenty of resources out there for helping you decide which expenses are proper for each business. There is some truth to the warning that not showing profit in 2/5 of years can raise flags at the IRS, and they may deem your business a hobby, which disallows losses. That is not a hard rule, legitimate businesses can lose money for years on end without issue, if you're trying to make money at it, you'll likely be fine. "We will bill our clients periodically and will get paid monthly. Who are ""we""? If you're not employed - you're not the one doing the work or billing the client. Would IRS care about this or this should be something written in the   policy of our company. For example: ""Every two months profits get   divided 50/50"" They won't. S-Corp is a pass-through entity. We plan to use Schedule K when filing taxes for 2015. I've never filled a schedule K before, will the profit distributions be reflected on this form? Yes, that is what it is for. We might need extra help in 2015, so we plan to hire an additional   employee (who will not be a shareholder). Will our tax liability go   down by doing this? Down in what sense? Payroll is deductible, if that's what you mean.  Are there certain other things that should be kept in mind to reduce the tax liability? Yes. Getting a proper tax adviser (EA/CPA licensed in your State) to explain to you what S-Corp is, how it works, how payroll works, how owner-shareholder is taxed etc etc." "This is a technical term referring to the ""double entry""-styled book keeping of trades by brokers. Suppose a client executes a buy order with their broker.  The broker's accounting for this ""trade"" will be recorded as two different ""deals"" : One ""deal"" showing the client as buyer and the broker as seller, and a second ""deal"" showing the broker as buyer and the clearing house as seller.  The net result of these two deals is that the broker has no net position while the client has a net buy and the clearing house has a net sell with respect to this broker's account as accounted for internally by the broker. (And the same methods apply for a client sell order.) The client/broker ""deal"" record - i.e., the client side of the trade - is called the ""client side booking"", while the broker/clearing house ""deal"" record is called the ""street side booking""." First, determine the workload he will expect.  Will you have to quit your other work, either for time or for competition?  How much of your current business will be subsumed into his business, if any?  Make sure to understand what he wants from you.  If you make an agreement, set it in writing and set some clear expectations about what will happen to your business (e.g. it continues and is not part of your association with the client).  Because he was a client for your current business, it can blur the lines. Second, if you join him, make sure there is a business entity.  By working together for profit, you will have already formed a partnership for tax purposes.  Best to get an entity, both for the legal protection and also for the clarity of law and accounting.  LLCs are simplest for small ventures; C corps are useful if you have lots of early losses and owners that can't use them personally, or if you want to be properly formed for easy consumption by a strategic.  Most VCs and super-angels prefer everybody be a straight C.  Again, remember to define, as necessary, what you are contributing to be an owner and what you are retaining (your original business, which for simplicity may already be in an entity).  As part of this process, make sure he defines the cap table and any outstanding loans.  Auntie June and Cousin Steve might think their gifts to him were loans or equity purchases; best to clear this issue up early before there's any more money in it. Third, with regard to price, that is an intensely variable question.  It matters what the cap table looks like, how early you are, how much work he's already done, how much work remains to be done, and how much it will pay off.  Also, if you do it, expect to be diluted by other employees, angels, VCs, other investors, strategics, and so on.  Luckily, more investors usually indicates a growing pie, so the dilution may not be at all painful.  But it should still be on your horizon.  You also need to consider your faith in your prospective partner's ability to run the business and to be a trustworthy partner (so you don't get Zuckerberg'd), and to market the business and the product to customers and investors. If you don't like the prospects, then opt for cash.  If you like the business but want to hedge, ask for compensation plus equity.  There are other tricks you could use to get out early, like forced redemption, but they probably wouldn't help either because it'd sour your relationship or the first VC or knowledgeable angel to come along will want you to relinquish that sort of right. It probably comes down to a basic question of your need for cash, his willingness to let you pursue outside work (hopefully high) and your appraisal of the business' prospects. Part A solution:  Assume no turnover in A.:      Average Balance * Annual Interest - Average Balance * Annual Cost of funds + Annual Fee = Profit from A        Profit From A = Average Balance * Interest Rate - Cost of Funds * Average Balance + Annual Fee     So for B here is the sneaky thing, the Average Balance is 1/12 of the Volume... That makes it really simple...       Volume * InterChange - Average Balance * Cost of Funds + Annual Fee = Profit From A       Volume = 12 x Average Balance So:       12 x Average Balance * Interchange (0.015) - Average Balance * Cost of Funds (0.04) + Annual Fee (Say 50)= Profit From A (260)       0.18* Average Balance - 0.04 * Average Balance = 210  Average Balance = 210/.14  Annual turnover = 12* Average Balance   Come @ me bro :p