The biggest money-savers are usually in the following categories: work location, transportation, housing, and food.
WORK:
a) Live very close to where you work, ideally walking or easy biking distance (for me, a reasonable distance is a 20 minute walk). Similarly, you could ensure you reside within a couple blocks of a transit stop. In most situations, it costs a lot less to use transit or walk or bike than to pay for the gasoline to commute every day – especially if you have a long commute or are in a city with bad gridlock. If you don't need a car any more as a result, and can get by with just transit and a carshare, your costs will drop even more! As an added bonus, biking or walking usually means you can drop the gym membership.
b) Work from home if possible. This is generally only appealing to introverts who don't need the daily social interaction and are very independent and self-motivated. The benefits are substantial: you instantly lose the costs of maintaining a work wardrobe, commuting (whether by car or transit), and for many people the lack of commute will free up two hours or more of every day for you to spend on what really matters to you in life (family, friends, hobbies, etc)!
c) Bring a brown-bag lunch and your own healthy snacks. If you bring bowls of soup or stew, make one large batch a week in advance and freeze them in the bowls for each day. Batch cooking also saves on utility bills for cooking.
d) Get your work wardrobe from thrift stores like Value Village, Talize, or the Salvation Army. You can come home with a huge bag full of fantastic clothes for under $100, including big name brand designer items. These locations also have sporadic 50% off sale days if you get on their email list.
TRANSPORTATION:
c) If you aren't using your car for commuting any more, get the insurance changed to "pleasure use, no commuting" to get lower rates. Inquire with your company about what other discounts they offer like multi-policy discounts. Use free online Canadian tools like http://www.insurancehotline.com to shop around for the best rates.
d) When purchasing a car, only buy used cars (1 or 2 year old vehicles are ideal) as the largest drop in value happens the moment a new car is driven off the lot. Have a used car inspected thoroughly by your own mechanic before buying though! It's worth the comparatively small investment to make sure there's nothing wrong with it.
e) Once a car is 5+ old and therefore not worth nearly as much any more, and you might be considering getting a newer one in the following five years anyway, consider dropping all perils & collision coverage from your insurance. Just keep 1 or 2 million liability coverage for vehicles over 5 years in age. You insurance payment will drop substantially as a result.
f) For all insurance (home, car, etc) opt for high deductibles. Deductibles are the amount you pay out of pocket first before making an actual claim. They could be set to $300 be default when you could push them as high as $2,000. You want to avoid making claims on your insurance whenever possible, because rates will go up if you do. If it's not onerous to have $2,000 in an emergency fund for these types of things (i.e. a fender bender) then definitely put your insurance deductibles high since it means your rates will be lower as the likelihood of you making anything other than a catastrophic claim becomes much lower.
g) Research the reliability of the car model year and brand you intend to buy. Some are known to be MUCH more reliable than others! The car I currently have – a 2001 Toyota ECHO – has served me flawlessly, gets 45mpg real-world mileage, and I intend to keep it for 20+ years. Here is a good resource for research: http://www.lemonaidcars.com/
h) If you live in an area with horrendous rush hour traffic, ask your employer if you can work 7-3, 7:30-3:30, 9:15-5:15, 9:30-5:30, or 10-6, etc. Commuting right before or after rush hour can save you substantial amounts of time and gasoline.
i) Sign up with a carshare if you don't need a car for work, and don't need one every day, but still need one here and there at times when transit doesn't run, or for hauling more cargo such as family grocery shopping. Most larger cities have a carshare. They keep cars scattered around the city that you reserve, and this is significantly less expensive than owning your own car. Zipcar is one well-know national option, but there are many smaller ones too: http://www.zipcar.com/
j) Buy the most fuel efficient car you can, and install a dashboard fuel consumption monitor (http://www.scangauge.com/)that gives you fuel consumption feedback in real-time. Seeing how your driving habits (accelerating too fast, driving over the speed limit, etc) affect fuel consumption in real time can reduce your gasoline consumption by 15% or more as you start to adjust how you drive in response. Some cars already have those displays (i.e. the Toyota Prius) built-in, but most don't.
HOUSING AND FOOD:
k) Cut your housing costs in half or even more by living with someone (or multiple people) and splitting the bills evenly between everyone. This is becoming more and more common beyond the college years, and into retirement, as people look to save costs and share resources in this persistently down economy. If you don't like sharing your living space, consider buying and renting out an adjoining duplex, or having a completely separate basement apartment that you rent out. You have to be really picky in choosing tenants though, as a bad tenant can ruin things. The income from your tenants can end up coving all your basic living costs, so you won't feel so vulnerable if you lose your job or whatever.
l) Live in a small or mid-sized city where the cost of living is significantly lower than places like Toronto or Vancouver. Examples of these smaller locales in Ontario would be Kitchener-Waterloo, Guelph, London, Barrie, or Cornwall – all of which are well-served by transit. Housing in huge major metropolitan areas sometimes costs double, triple, or quadruple what you'd pay elsewhere an hour or two away. Wages/salaries for equivalent jobs in large cities aren't double or quadruple what they are in smaller cities either, so your income will go a lot farther in a low cost of living area!
m) Consider eco-villages, co-housing, communes, co-op housing, and other alternative lifestyle options. They are often much, much better designed than uninspiring suburb or highrise living, with more green space, and common areas, like-minded people, and are sometimes more affordable than regular housing in the area.
n) Depending on the zoning of your place, you can turn it into a bed and breakfast or rent a room on a short-term basis to travellers if you don't want people living there 24/7 but still want to make some money from your extra space.
o) If you don't have a car, but do have a driveway and/or garage, or have more space than you use, advertise paid parking or paid garage space. Why let the extra space go to waste? You may have neighbours that are tired of juggling vehicles in their driveway, want to park indoors in the winter, or they may have visitors for a few days but no street parking, and would love the convenience of access to your driveway for a reasonable fee. Parking is in especially high demand in larger cities such as Toronto.
p) Cook dinner after 7pm at night Monday-Friday if you are on time-of-use electricity pricing. This pricing scheme is all over Ontario now, and it will cost you up to 2/3 less to use your electric stove after 7pm and before 7am! The stove is a huge energy suck – cooking dinner pulls thousands of watts.
q) For the same reason as above, only use your electric washer and dryer on weekends or after 7pm. Wash in cold water only, and set your dryer to "low" or "medium" to use less energy. Better yet, dry your clothes on a clothes line.
r) Use microwaves for cooking or re-heating as they cook much faster than stoves and use less energy. This works well combined with bulk batch cooking on weekends that you reheat throughout the week.
s) Stock up on frequently-used food items only when they are on sale at grocery stores – you can save quite a bit that way. For example, "Lean Cuisine" frozen dinners are sometimes 40% off some days, and I only buy them on those days, and buy a whole bunch at once. I've also noticed that, in most cases, prices are definitely cheaper at places like WalMart or Food Basics versus higher-end stores like Loblaws.
I hope you enjoyed my tips! 