In provinces where there is PST (Provincial Sales Tax) as well and you have to charge both GST and PST, you calculate the GST on the price of the goods or service before PST has been applied. The provinces of Manitoba, Saskatchewan and British Columbia have PST: 1  in British Columbia, 7%.ST @ 15% $6.00. Total Price $45.99. For more on invoicing and applying taxes, see How to Invoice and An Invoice Sample with HST. Both of these articles explain exactly what information has to be on an invoice as well as providing invoice templates you can use.
NEXT STEP. Find out how much your project will cost. Provide a few details about your project and receive competitive quotes from local pros. The average national cost of building a foundation is $7,775, with most homeowners spending between $4,239 and $11,710.This data is based on actual project costs as reported by HomeAdvisor members. Any structure, whether a house, a garage, or workshop, is only as strong as its foundation.he average national cost of building a foundation is $7,775, with most homeowners spending between $4,239 and $11,710. This data is based on actual project costs as reported by HomeAdvisor members.
The budget will also include material and labor costs associated with building forms for the concrete, casting the footers and stem wall, and pouring and finishing the slab. At the time of publication, the cost of a typical slab foundation for a home between 1,600 and 1,800 square feet ranges between $7,000 and $16,000. slab foundation consists of a flat, cast-concrete slab that rests on a perimeter stem wall, which in turn rests on a below-grade footing. The cost of building this type of foundation includes excavation of the site, grading of the site and the addition of a gravel base layer beneath the slab.