3-year horizon before trading up to next home: put windfall in savings, or pay off mortgage?
First, I would want cash around the time I made the move.  I would like enough for a 20% down payment, moving expenses, and enough for 6 months of mortgage payments on the existing house.  This way if the house does not sell quickly, you are safe.  As you approach the time it comes to move, you can work backwards on how much time you would need to accumulate that kind of money. Second, this does not have to be an all or nothing kind of thing.  Perhaps you use some of the proceeds to beef up your retirement, some to pay down the mortgage, and some for savings.  You could be very wrong about the market, even so it is a wonderful opportunity to add to your nest egg at such a young age.  My own self prefers to do things in ratios.  In your case I might do 10% of the proceeds in for retirement, 10% for savings, and 80% for mortgage reduction.  (You may want to also add some charitable giving.)   I really like paying down the mortgage.  Not only is it a risk less investment, it reduces your personal risk. A few points to consider - Welcome to Money.SE. This is not a discussion board, but rather, a site to ask and answer personal finance questions that are factual in nature. Your question is great, in my opinion, but it's a question that has no answer, it's opinion-based. So I'm slipping this in to help you, and suggest you visit the site to see the great Q&A we've accumulated over the years. You may have to both save your windfall in a savings account and use it to pay down your mortgage. Almost every mortgage has some sort of pay-down option that allows you to pay off a percentage of the original principal without penalty. Any amounts above that will be penalized, most likely by the amount of interest the lending institution would have collected. Ask your lender what the penalties are and what penalty-free pay-down options you have. Knowing that and how much you will receive each quarter by selling the company stock will tell you how much of your money you need to put against your house and your savings account.
"As the answer above states, future inflation mitigates ""unwise"" for a longer term mortgage, at least in financial-only terms.  But consider that, if you lose your ability to make payments for long enough time ANYTIME during term, the lending institution has a right to repossess, leaving you with NOTHING or worse for all the maintenance you've had to do.  You can never know, but eleven years into my mortgage, I lost enough of my income for just long enough time to have to sell for just enough to pay the remainder of the mortgage and walk away with empty pockets.   To help clarify understanding even better, contrast the 30-yr mortgage with the other extreme: save up and own from day one.  When I did the math a few years ago, buying with a 30-year mortgage would cost cumulatively almost 3 times the real house value in mortgage payments with never the freedom to suspend payments when I might need to.  Being a freedom-loving American, I determined to buy a house with cash.  DON'T FORGET that mortgageable properties are over-priced just because buyers less wise than you are so willing to borrow to buy them, so I decided to buy some fixer-upper that no bank would lend on.  I found such a fixer-upper, paid cash, never have to worry about repossession by a lender, can continue to save up for my dream home which I'll own a lot sooner, and will have a nice increase in house value while I fix it up to help get me there, and NO INSURANCE PAYMENTS to some insurer who'll tell me what I can't do with MY property. Let the next buyer of your fixed-up, paid-off house pay YOU the over-priced amount they are willing to pay just because THEY can get that 30-year mortgage, and you enjoy the freedom to dream and adjust your budget to the needs of the moment and end up with a house in 30 years (15, more realistically) that is 2.5 times more valuable.  And keep from fighting with your spouse over finances in the meantime." "The basic optimization rule on distributing windfalls toward debt is to pay off the highest interest rate debt first putting any extra money into that debt while making minimum payments to the other creditors. If the 5k in ""other debt"" is credit card debt it is virtually certain to be the highest interest rate debt. Pay it off immediately. Don't wait for the next statement. Once you are paying on credit cards there is no grace period and the sooner you pay it the less interest you will accrue. Second, keep 10k for emergencies but pretend you don't have it. Keep your spending as close as possible to what it is now. Check the interest rate on the auto loan v student loans. If the auto loan is materially higher pay it off, then pay the remaining 20k toward the student loans. Added this comment about credit with a view towards the OP's future: Something to consider for the longer term is getting your credit situation set up so that should you want to buy a new car or a home a few years down the road you will be paying the lowest possible interest. You can jump start your credit by taking out one or two secured credit cards from one of the banks that will, in a few years, unsecure your account, return your deposit, and leave no trace you ever opened a secured account. That's the route I took with Citi and Wells Fargo. While over spending on credit cards can be tempting, they are, with a solid payment history, the single most important positive attribute on a credit report and impact FICO scores more than other type of credit or debt. So make an absolute practice of only using them for things you would buy anyway and always, always, pay each monthly bill in full. This one thing will make it far easier to find a good rental, buy a car on the best terms, or get a mortgage at good rates. And remember: Credit is not equal to debt. Maximize the former and minimize the latter." "Your question isn't great, but I will attempt to answer this piece as it seems really the root of your personal finance question: I want to convince my wife to make this move because it will save us   at least 800 month, but she fails to see how buying a second home is   financially sound because we have to lose our savings and we have to   pay interest on our second home. And... Her logic is it will take almost 5 years to get back our down payment   and we have to pay interest as well. So how can this move help our   family financially in the long run? ... Is she right? She is mostly wrong. First, consider that there is no ""ROI"" really on your down payment. Assuming you are paying what your home would sell for the next day, then your ""RIO"" is already yours (minus realtor fees). She is talking about cash on hand, not ROI. I will use an example without taking into account risk of home markets going down or other risks to ownership. Example: Let's say you pay $2800 a month in mortgage interest+principle at 5.5% apr and $200 a month in taxes+insurance on a $360k loan ($400k house). In this example let's say the same house if you were to rent it is $3800 a month. Understand the Opportunity Cost of renting (the marginal amount it costs you to NOT buy). So far, your opportunity cost is $800 a month. The principle of your house will be increasing with each payment. In our example, it's about $400 for the first payment, and will increase with each payment made while decreasing the interest payment (Suggest you look at an amortization table for your specific mortgage example). So, you're real number is now $1200 a month opportunity cost. Consider also the fact that the $400 a month is sitting in a savings account of sorts. While most savings accounts give you less than 1% in returns and then charge taxes on that gain, your home may (or may not be) much higher than that and won't charge you taxes on the gains when you sell it (If you live in it for a period of time as defined by the IRS.) Let's assume a conservative long term appreciation rate of 3%. That's $12k a year on a $400k house. So, now you're at $2200 a month opportunity cost. In this example I didn't touch on your tax savings of ownership. I also didn't touch on the maintenance cost of ownership or the maintenance cost of renting (your deposit + other fees) which all should be considered. You may have other costs involved in renting. For instance: The cost of not being able to fully utilize your rental as your own house. This may be an even simpler and more convincing way to explain it: On the $2800 mortgage example, you will be paying around $19k in interest and $2400 on taxes, insurance = $23k per year (number could be way different in your example). That is basically throw away money you're never getting back. On the rental, 100% of your rent at $3800 a month is throw away money you're never getting back. That's $45,600 a year." Answers to this your question break down along a few lines regarding opportunity costs of tying up a significant chunk of your salary and assets in one piece of property, as opposed to other things you'd like to do with your life.  The 30 year standard mortgage was invented in the 30's as part of FDR's new deal to make housing affordable to more people, while relieving the strain on the market of foreclosed homes from ~10 year interest only balloon mortgages (sound familiar?). The 30 year term tends to follow the career of the average American of that era, allowing them to pay the house off and live out the remainder of their lives there at a lower cost.  Houses are depreciating assets because they wear out over time. Their greatest investment value is a place to live. The appreciation on a home comes from the real estate it sits on and the community the property is located in. Value is determined by desirability of the house and community in their current state, and the supply of property in the area. This value can only be extracted when you sell the home. This partially answers your last question noting that you shouldn't buy a really expensive building for investment value. We've learned in recent years that there are no long term guarantees of property value either, because land and communities can decrease in value due to unemployment, over supply, crime, pollution, etc. Only buy as much home as you will need in the next decade or so, in a place that you will like living over that time period, and don't consider it much of an investment. I will tell you to get a fifteen year fixed rate mortgage since it's readily available at lower rates and has a significantly lower total purchase price than the standard 30 years. The monthly payment difference isn't that great, and anyone who looks at the monthly payment as opposed to the total costs, your priorities and the opportunity costs shouldn't be trusted for financial advice. I don't like debt. There are psychological benefits to being free from the bondage and drain of a long term mortgage on your finances.  The biggest argument for paying off your home quickly is freedom to pursue other desires with all of your salary and the assets you have available to you. Some financial advisers will tell you to keep your mortgage costs under 25% of your income, so that you can actually live off the money you make. I would also recommend paying at least enough into your 401k to get the company match and fully funding your Roth IRA. I'd also have an emergency fund to cover at least 6 months of expenses, including this mortgage in case you lose your job. A 15 or 20 year mortgage will give you breathing room to take care of these other priorities, and you can overpay on almost any mortgage to decrease the principal and finish in a shorter time period (make sure to get a mortgage that allows prepayment) . More financially savvy people may tell you to take the 30 year mortgage and invest the difference. Especially with mortgage rates around 4%, this is a very cheap way to increase your purchasing power and total assets. Most people lack the investment prowess and self discipline to make this plan pay off. There are even fewer guarantees regarding markets and investments than property. This also is a way of diversifying your total assets to protect against loss of value in your home. This approach has backfired for thousands of people who are underwater on their homes. This problem is often compounded by job loss forcing you to move, or increasing your commute, making your home less desirable for you. Some people will tell you to maintain the mortgage for the tax credit. This fails a basic math test since you only get about a quarter of the money (depending on your tax rate) that you are paying in interest back from the government. The rest of the money goes to bank at no gain to you. This approach is basically a taxpayer subsidized decrease of your 4% interest payment to a 3% interest payment (assuming you have ~ $5000 in other deductions), and only pays off if you can successfully invest the money at a rate somewhat greater than 3%. Here is something that should help your decision: Currently you are 57, suppose that means that you will still work for 10 years, and then be retired for another 20 before you sell the house. Your retirement account is nearly flat, so you will have to support yourself with your own income.  If there are no surprises, you and your wife could expect to earn 1.16 million over the  next 10 years. There will be interest on your savings, but also inflation, so to simplify I will ignore both. That means you will have an average of 40k (gross?) per year available to live from during the next 30 years. If you get a mortgage where you only pay nett 3% interest (no payback of the loan), that would cost you 6k per year on interest (based on 350k-150k), if you also want to pay back the 200k difference within 30 years, it would totally be close to 13k in annual interest+payback. Now consider whether you would rather live on 40k per year in your current place, or on a lower amount in a bigger place. Personally I would not choose to make a 200k investment at this point, perhaps after trying to live on a budget for a while. (This has the additional benefit that you can even build some cash reserve before buying anything.) To start, I hope you are aware that the properties' basis gets stepped up to market value on inheritance.  The new basis is the start for the depreciation that must be applied each year after being placed in service as rental units. This is not optional. Upon selling the units, depreciation is recaptured whether it's taken each year or not. There is no rule of thumb for such matters. Some owners would simply collect the rent, keep a reserve for expenses or empty units, and pocket the difference. Others would refinance to take cash out and leverage to buy more property. The banker is not your friend, by the way. He is a salesman looking to get his cut. The market has had a good recent run, doubling from its lows. Right now, I'm not rushing to prepay my 3.5% mortgage sooner than it's due, nor am I looking to pull out $500K to throw into the market.  Your proposal may very well work if the market sees a return higher than the mortgage rate. On the flip side I'm compelled to ask - if the market drops 40% right after you buy in, will you lose sleep?  And a fellow poster (@littleadv) is whispering to me - ask a pro if the tax on a rental mortgage is still deductible when used for other purposes, e.g. a stock purchase unrelated to the properties.   Last, there are those who suggest that if you want to keep investing in real estate, leverage is fine as long as the numbers work. From the scenario you described, you plan to leverage into an already pretty high (in terms of PE10) and simply magnifying your risk. First consider the basic case of what you are asking: you expect to have a future obligation to pay interest, and you are concerned that the rate when you pay it, will be higher than the rate today. In the simplest case, you could theoretically hedge that risk by buying an asset which pays the market interest rate. As the interest rate rises, increasing your costs, your return on this asset would also increase. This would minimize your exposure to interest rate fluctuations. There are of course two problems with this simplified solution:  (1) The reason you expect to pay interest, is because you need/want to take on debt to purchase your house. To fully offset this risk by putting all your money in an asset which bears the market interest rate, would effectively be the same as just buying your house in cash. (2) The timing of the future outflow is a bit unique: you will be locking in a rate, in 5 years, which will determine the payments for the 5 years after that. So unless you own this interest-paying asset for that whole future duration, you won't immediately benefit. You also won't need / want to buy that asset today, because the rates from today to 2022 are largely irrelevant to you - you want something that directly goes against the prevailing mortgage interest rate in 2022 precisely. So in your specific case, you could in theory consider the following solution: You could short a coupon bond, likely one with a 10 year maturity date from today. As interest rates rise, the value of the coupon bond [for it's remaining life of 5 years], which has an implied interest rate set today, will drop. Because you will have shorted an asset dropping in value, you will have a gain. You could then close your short position when you buy your house in 5 years. In theory, your gain at that moment in time, would equal the present value of the rate differential between today's low mortgage rates and tomorrow's high interest rates. There are different ways mechanically to achieve what I mention above (such as buying forward derivative contracts based on interest rates, etc.), but all methods will have a few important caveats: (1) These will not be perfect hedges against your mortgage rates, unless the product directly relates to mortgage rates. General interest rates will only be a proxy for mortgage rates. (2) There is additional risk in taking this type of position. Taking a short position / trading on a margin requires you to make ongoing payments to the broker in the event that your position loses money. Theoretically those losses would be offset by inherent gains in the future, if mortgage rates stay low / go lower, but that offset isn't in your plan for 5 years. (3) 5 years may be too long of a timeline for you to accurately time the maturity of your 'hedge' position. If you end up moving in 7 years, then changes in rates between 2022-2024 might mean you lose on both your 'hedge' position and your mortgage rates. (4) Taking on a position like this will tie up your capital - either because you are directly buying an asset you believe will offset growing interest rates, or because you are taking on a margin account for a short position (preventing you from using a margin account for other investments, to the extent you 'max out' your margin limit). I doubt any of these solutions will be desirable to an individual looking to mitigate interest rate risk, because of the additional risks it creates, but it may help you see this idea in another light. Certainly, paying off the mortgage is better than doing nothing with the money. But it gets interesting when you consider keeping the mortgage and investing the money. If the mortgage rate is 5% and you expect >5% returns from stocks or some other investment, then it might make sense to seek those higher returns. If you expect the same 5% return from stocks, keeping the mortgage and investing the money can still be more tax-efficient. Assuming a marginal tax rate of 30%, the real cost of mortgage interest (in terms of post-tax money) is 3.5%*. If your investment results in long-term capital gains taxed at 15%, the real rate of growth of your post-tax money would be 4.25%. So in post-tax terms, your rate of gain is greater than your rate of loss. On the other hand, paying off the mortgage is safer than investing borrowed money, so doing so might be more appropriate for the risk-averse. * I'm oversimplifying a bit by assuming the deduction doesn't change your marginal tax rate.