I deposited 5K in my RRSP in 2018. I may receive $1,500 (30% of 5000) tax return . but the system calculate only $1,100 do you know why? I made 40K T4 2018 .

[TurboTaxKim]

Without seeing your entire tax return and knowing your individual tax situation, it's tough to tell if you should be getting a larger refund. I can tell you that TurboTax is guaranteed to make the correct calculations so if you have been through the Review section and have addressed all the Tax Savings Opportunities and Warnings, this figure is guaranteed to be correct.

Your RRSP Contribution only lowers your income and means you will be paying less income tax. You are not guaranteed to get back 30% of your purchase of an RRSP on your income tax return.