What does inflation mean to me?
"Inflation as defined in the general, has many impacts at a personal level. For example, you say that the reduction in the price of oil has no impact on you.  That's absolutely not true, unless you're a hermit living off of the land.  Every box or can or jar of food you buy off the shelf of the grocery store has the price of oil baked into it, because it had to get there somehow.  High fuel costs for trucks mean increased costs to put food on shelves, which mean increased prices for that food. Even tobacco prices can affect you, because they affect what other people are spending.  Demand is always a significant factor in prices, particularly retail prices, and if people are spending more money on tobacco, they're probably spending less on other things - either buying less snacks, for example, or buying cheaper brands of those snacks.  So the price of Doritos may drop a bit (or not rise), for example. General inflation also tends to drive raises, particularly in industries with relatively small performance ties to raises.  If inflation is 3%, wages need to raise 3% or so in order to keep up, on average; even if your personal cost-of-living went up 0%, or 5%, or 10%, the default wage inflation will be closer to that of the national average.  Any raise less than national average is effectively a pay cut (which is one reason why inflation is needed in a healthy economy).  So your company probably has a cost-of-living raise everyone gets that's a bit less than inflation, and then good performers get a bump up to a bit more than inflation.  You can read more on this topic for a more in-depth explanation. Finally, inflation rates tend to be major factors in stock market movement.  Inflation that is too high, or too low, can lead to higher volatility; inflation that is ""right"" can lead to higher stability.  An economy that has consistently ""right"" inflation (around 2-3% typically) will tend to have more stable stock market in general, and thus more reliable returns from that market.  There are many other factors that lead to stock markets rising and falling, but inflation is one very relevant one, particularly if it's not in the ""right"" zone." Inflation data is a general barometer for inflation that a typical consumer would experience.  Generally when calculating inflation for yourself you would only include items that you use and in percentages of your budget.   Personal inflation is much more useful when attempting to calculate safe withdrawal rates or projections into the future. The general discussion of inflation centers on money as a medium of exchange and a store of value. It is impossible to discuss inflation without considering time, since it is a comparison between the balance between money and goods at two points in time. The whole point of using money, rather than bartering goods, is to have a medium of exchange. Having money, you are interested in the buying power of the money in general more than the relative price of a specific commodity. If some supply distortion causes a shortage of tobacco, or gasoline, or rental properties, the price of each will go up. However, if the amount of circulating money is doubled, the price of everything will be bid up because there is more money chasing the same amount of wealth. The persons who get to introduce the additional circulating money will win at the expense of those who already hold cash. Most of the public measures that are used to describe the economy are highly suspect. For example, during the 90s, the federal government ceased using a constant market basket when computing CPI, allowing substitutions. With this, it was no longer possible to make consistent comparisons over time. The so-called Core CPI is even worse, as it excludes food and energy, which is fine provided you don't eat anything or use any energy. Therefore, when discussing CPI, it is important to understand what exactly is being measured and how. Most published statistics understate inflation. It means that your money does not have the same amount of buying power. "Everyone buys different kinds of goods. For example I don't smoke tobacco so I'm not affected by increased tobacco prices. I also don't have a car so I'm not affected by the reduced oil prices either. But my landlord increased the monthly fee of the apartment so my cost of living per month suddenly increased more than 10% relative to the same month a year before.  This is well known, also by the statistical offices. As you say, the niveau of the rent is not only time- but also location specific, so there are separate rent indices (German: Mietspiegel). But also for the general consumer price indices at least in my country (Germany) statistics are kept for different categories of things as well.  So, the German Federal Statistical Office (Statistisches Bundesamt) not only publishes ""the"" consumer price index for the standard consumer basket, but also consumer price indices  for oil, gas, rents, food, public transport, ... Nowadays, they even have a web site where you can put in your personal weighting for these topics and look at ""your"" inflation:  https://www.destatis.de/DE/Service/InteraktiveAnwendungen/InflationsrechnerSVG.svg Maybe something similar is available for your country?" "short answer:  any long term financial planning (~10yrs+). e.g. mortgage and retirement planning.  long answer: inflation doesn't really matter in short time frames. on any given day, you might get a rent hike, or a raise, or the grocery store might have a sale.  inflation is really only relevant over the long term.  annual inflation is tiny (2~4%) compared to large unexpected expenses(5-10%).  however, over 10 years, even your ""large unexpected expenses"" will still average out to a small fraction of your spending (5~10%) compared to the impact of compounded inflation (30~40%). inflation is really critical when you are trying to plan for retirement, which you should start doing when you get your first job.  when making long-term projections, you need to consider not only your expected nominal rate of investment return (e.g. 7%) but also subtract the expected rate of inflation (e.g. 3%). alternatively, you can add the inflation rate to your projected spending (being sure to compound year-over-year). when projecting your income 10+ years out, you can use inflation to estimate your annual raises.  up to age 30, people tend to get raises that exceed inflation. thereafter, they tend to track inflation. if you ever decide to buy a house, you need to consider the impact of inflation when calculating the total cost over a 30-yr mortgage. generally, you can expect your house to appreciate over 30 years in line with inflation (possibly more in an urban area). so a simple mortgage projection needs to account for interest, inflation, maintenance, insurance and closing costs. you could also consider inflation for things like rent and income, but only over several years. generally, rent and income are such large amounts of money it is worth your time to research specific alternatives rather than just guessing what market rates are this year based on average inflation. while it is true that rent and wages go up in line with inflation in the long run, you can make a lot of money in the short run if you keep an eye on market rates every year. over 10-20 years your personal rate of inflation should be very close to the average rate when you consider all your spending (housing, food, energy, clothing, etc.)."
Inflation refers to the money supply. Think of all money being air in a balloon. Inflation is what happens when you blow more air in the balloon. Deflation is what happens when you let air escape. Inflation may cause prices to go up. However there are many scenarios possible in which this does not happen. For example, at the same time of inflation, there might be unemployment, making consumers unable to pay higher prices. Or some important resource (oil) may go down in price (due to political reasons, war has ended etc), compensating for the money having less value.  Similarly, peoples wages will tend to rise over time. They have to, otherwise everyone would be earning less, due to inflation. However again there are many scenarios in which wages do not keep up with inflation, or rise much faster. In fact over the past 40 years or so, US wages have not been able to keep up with inflation, making the average worker 'poorer' than 40 years ago. At its core, inflation refers to the value of the money itself. As all values of other products, services, assets etc are expressed in terms of money which itself also changes value, this can quickly become very complex. Most countries calculate inflation by averaging the price change of a basket of goods that are supposed to represent the average Joe's spending pattern. However these methods are often criticized as they would be 'hiding' inflation. The hidden inflation may come back later to bite us. I was being sarcastic in response to you saying that hyperinflation happens every 30-50 years in a finance subreddit.. where the second lesson (right after time value of money) is that past results in general tell us nothing about the future. &gt; *I fail to see how moderate inflation is a bad thing*  The purchasing power of the currency slowly erodes, which means people's savings melt away.  So people are forced to invest into something they don't really understand and something that is completely rigged, instead of just having their savings in a currency.  [USD purchasing power](http://3.bp.blogspot.com/-mAg6FMpNGpM/Ta9ICcEMonI/AAAAAAAABBM/UoQG8vxtBX0/s1600/U.S.%2BDollar%2BPurchasing%2BPower.jpg). "Inflation, like trade deficits or surpluses, have winners and losers in an economy. Clear losers are people who are on a fixed income, as they often have a fixed income and a prices keep on going up, meaning they can afford less.  Numerous articles on the internet discuss the inflation of the 1970s, here are Google's results.  I'm not so sure that governments want ""some inflation"" as much as they desperately want to avoid deflation. Deflation means that the price for today's product, like a car, will decrease in price tomorrow (or a month from now) which creates a powerful incentive for people to put off a purchase until later, which brings consumer demand down in a country's economy." This was called Financial repression by Edward S. Shaw and Ronald I. McKinnon from Stanford (https://en.wikipedia.org/wiki/Financial_repression). Financial repression is the situation, when government is stealing from people, who rely heavily on saving, rather then on spending. Meaning that your saving rates will be a lot worse then inflation rate. Financial markets are artificially hot and interest rates artificially low (average historical interest rate is 10%). This could be a possible predictor state to hyper-inflation. Inflation is what happens, it is not good or bad in and of itself.  But consider the following. In a thriving economy with low unemployment, people are buying, buying, buying.  People are not saving for later, they are buying now.  Industry is also making purchases.  Now.  From economics 101: high demand for goods/services leads to relative scarcity leading to higher prices.  Inflation tends to be one byproduct of a thriving economy.  Governments want the thriving economy that brings inflation with it. The only reason inflation has yet to show in the CPI is because the dollar is the global reserve currency and is the best house in a bad neighborhood, but that just means the rest of the world is becoming poorer at the same time as the U.S. - QE was 4 trillion. That's a debasement of the currency even if, for the reason I've already stated, it's not reflected in CPI. It can take a while for inflation to seep into all aspects an economy and be felt by a consumer. Often, things that consumers use the most (like gasoline, wheat products, corn products, soy products, and sugar), are commodities spread across global markets with their own pricing which may be impacted by inflation in any given country.  Also, inflation can be beneficial in some ways. A $500/month mortgage payment was a big deal 30 years ago, and now would be considered trivial. That's entirely because of inflation.  Run-away inflation, where people are burning the currency to stay warm, is a different beast altogether. Be wary of people who conflate inflation, consumer pricing, and destructive currency devaluation, because they're not the same things. Correct me if I am wrong (and I know you will), but in an economy where most consumers have more debt than savings, I fail to see how moderate inflation is a bad thing. Higher wages negate higher prices, and lower debt burdens free consumer demand.   Why are there always people in freak out mode if it looks like inflation may occur even slightly? "No, virtually ever item in the CPI is adjusted using hedonics, which by definition can only be used to lower inflation, not adjust it up.  Hedonics is not necessarily bad, but it doesn't actually reflect inflation, it reflects standard of living vs. purchasing power, which is not useful for a purely monetary measure.  It also does not correctly reflect that despite the fact that a 1970's 20"" TV cannot from an economic standpoint be directly compared to a 2012 20"" TV, if the price is the same (adjusted for inflation), inflation represents how the value of the dollar has accrued vs the value of a 20"" TV, which is what the definition of inflation is.  So, no, I don't think you're correct on this. This is also kind of glossing over the fact that the CPI essentially makes the bold argument that energy and transportation prices never affect inflation." "Debt is nominal, which means when inflation happens, the value of the money owed goes down.  This is great for the borrower and bad for the lender. ""Investing"" can mean a lot of different things.  Frequently it is used to describe buying common stock, which is an ownership claim on a company.  A company is not a nominally fixed asset, by which I mean if there was a bunch of inflation and nothing else happened (i.e., the inflation was not the cause or result of some other economic change) then the nominal value of the company will go up along with the prices of other things. Based on the above, I'd say you are incorrect to treat debt and investment returns the same way with respect to inflation.  When we say equity returns 9%, we mean it returns a real 7% plus 2% inflation or whatever.  If the rate of inflation increased to 10% and nothing else happened in the economy, the same equity would be expected to return 17%.  In fact, the company's (nominally fixed) debts would be worth less, increasing the real value of the company at the expense of their debt-holders. On the other hand, if we entered a period of high inflation, your debt liability would go way down and you would have benefited greatly from borrowing and investing at the same time.   If you are expecting inflation in the abstract sense, then borrowing and investing in common stock is a great idea. Inflation is frequently the result (or cause) of a period of economic trouble, so please be aware that the above makes sense if we treat inflation as the only thing that changed.  If inflation came about because OPEC makes oil crazy expensive, millennials just stop working, all of our factories got bombed to hades, or trade wars have shut down international commerce, then the value of stocks would most definitely be affected.  In that case it's not really ""inflation"" that affected the stock returns, though." you understand inflation is necessary for growth? inflation is an increase in the money supply. the fed has a policy of inflation targeting. they say okay we are fine with 2% inflation lets keep it at that level. and their policies aim to keep inflation at that level. I've seen a lot of long and complicated answers here so here is my simple and short answer: Let's say the economy consists of: 10 apples and 10$. Then an apple costs 1$. If you print 10$ more you have: 10 apples and 20$. Then an apple costs 2$. That is it! It's not what Kenshin said:  Over time, prices go up! However I would like to add something more on the topic: inflation is theft! If I hack the bank and steal 10% from each account it's obvious that it is theft. It's a bit less obvious when the government prints out money and people loose 10% of the value in their bank accounts but the end result is the same. Final note: some may disagree but I do not consider inflation when 5 of the apples rot and you have: 5 apples and 10$ and an apple now costs 2$. This is a drop in supply and if the demand stays the same prices will rise. No, there is no linkage to the value of real estate and inflation. In most of the United States if you bought at the peak of the market in 2006, you still haven't recovered 7+ years later. Also real estate has a strong local component to the price. Pick the wrong location or the wrong type of real estate and the value of your real estate will be dropping while everybody else sees their values rising. Three properties I have owned near Washington DC, have had three different price patterns since the late 80's. Each had a different starting and ending point for the peak price rise.  You can get lucky and make a lot, but there is no way to guarantee that prices will rise at all during the period you will own it. Inflation protected securities (i-bonds or TIPS).   TIPS stands for Treasury Inflation Protected Securities. By very definition, they tend to protect your savings against inflation. They won't beat inflation, but will keep up with it. TIPS or iBonds have two parts. A fixed interest part and a variable interest portion which varies depending upon the current rates. The combined rate would match the inflation rate. They can be bought directly from the treasury (or from a broker or bank who might charge a commission)