Lower HRA exemption in ITR compared to Form 16

I have declared a monthly amount of rent outgo to employer, basis which the employer has been deducting TDS. Part of this amount I do not pay to landlord directly, but to society as maintenance charges.

To avoid any complexity, I now want to consider only the monthly amount I transfer to landlord for HRA exemption calculation. Can I pay difference in tax amount as self assessment tax to the IT department, and in ITR input a lower amount of HRA exemption, as compared to the value in the Form-16 from employer?

Thanks a lot for the guidance.