The 2026 rules are separate programs, and they do not stack into one number for every buyer. First-time buyers can get back up to $50,000 of the federal GST, in full on a new home up to $1 million and reduced between $1 million and $1.5 million. Ontario's first-time rebate can cover up to $80,000 of the provincial part. Where the older new housing rebate also applies, the first-time rebate is a top-up.
If the agreement with a builder is signed on or after April 1, 2026 and on or before March 31, 2027, and the home is a primary residence, Ontario's enhanced new housing rebate plus the existing Ontario new housing rebate can relieve up to $80,000 of the provincial 8%. That rebate is not limited to first-time buyers. Ontario's new home affordability payment is up to $50,000 of the federal part, and it is reduced by any federal new housing rebate or first-time GST/HST rebate. A first-time buyer claims the federal rebate first. Confirm the agreement with your lawyer.
Checked October 18, 2026. https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate.html https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/notice346/ontario-enhanced-new-housing-rebate.html