In India, for new kingdom halls, all finance is provided by the LDC. After the Kingdom Hall mortgages were cancelled, the congregations were advised to keep a minimum balance (not specified) to take care of nominal expenses and send all excess funds to the branch. All major expenses, maintenance costs, lease deposits are taken care by the branch office. Any expense which cannot be covered by the congregation is passed on to the branch office.
For spaces leased for KH's, the lease agreement is prepared directly between the Watchtower and the lessor/landlord. The rent is paid directly by the WT to the Landlord. Excess funds are sent to the WT and is used for building KH's for poorer congregations.
For the Kingdom Hall in my area which is on lease, INR 1.5 million was given by the branch to the landlord as the lease deposit and INR 900,000 is paid yearly to the landlord by the WT as rent.