No. You have provided to the calculator the estimated CPF housing grant amount, to work out your finances to buy the flat. The housing loan amount is merely an estimate based on what you have provided to the calculator.

If you wish to confirm the amount of housing grants and/or HDB housing loan that you are eligible for, or apply for an In-Principle Approval or Letter of Offer from the participating financial institutions for a housing loan, please apply for an HFE letter.

This information is sourced from HDB