Phone or visit your local Licensing Commission or municipal authorities–some communities have precise rules on holding garage sales and require permits or at least a notification.
Contact the Sales Tax District office of your provincial government for information. Some provinces may require that you collect sales tax. If this is the case, you will have to obtain a vendor’s permit in order to levy the applicable tax. Note that Federal taxes do not apply to garage sales.
Check local provincial and federal laws before selling firearms, ammunition or explosives. The selling of some other items–bedding, food, clothes, etc.–may also be covered by local or provincial ordinances.
Visit other garage sales–as a customer, you will be able to learn from them and will have an idea of the general price levels.
Start saving shopping bags, cardboard boxes and newspapers Your customers will find them very convenient on the day of the sale.
Visit resale shops, antique shops, flea markets, eta –you may have a pleasant surprise at finding out that some of your discards are worth a lot more than you thought. You can also go to your local library and have a look at some specialized magazines. Consider holding a joint sale with one or several other families, you will have a larger display of merchandise, the sale can be held in the home with the best location and the families can share the work. Don’t forget to include an owner’s code on all the price tags, unless you decide on organizing a small flea market where each family have their own selling space.
Consider taking consignments–if you don’t mind the extra responsibilities and book-keeping, you can be sure to get publicity from the consignees and increase your profits according to the commission you charge–20% of the selling cost, on average.