Free tool

Society maintenance calculator

Work out each flat's maintenance per sq ft, equally, or both. Then check the interest on a late payment and whether GST applies. Nothing to install, nothing saved.

Maintenance charges per flat

₹

Salaries, power, lift, repairs, sinking fund.

sq ft

Carpet or chargeable area, as your bylaws say.

sq ft
Maintenance for this flat, per month₹3,000
Rate per sq ft
₹2.50
Per year
₹36,000

Interest on late maintenance

₹
%

Simple interest, counted by the day. Use the rate your general body approved. Your bylaws set the ceiling.

Interest on the late payment₹44
Overdue amount
₹3,000
Total to pay now
₹3,044

Is GST due on your maintenance?

₹

Leave out property tax, electricity and other statutory charges the society only passes on.

GST at 18% on the full ₹8,500₹1,530
Maintenance
₹8,500
Bill with GST
₹10,030
If only the excess is taxed
₹180

The three ways societies split maintenance

By area. The common method in apartments. Total monthly expenses divided by total carpet area gives a rate per sq ft, and bigger flats pay more. It is easy to defend because the formula is the same for everyone.

Equally. Every flat pays the same. Simple, and it suits societies where flats are of similar size, or for services that cost the same per household whatever the size.

Both. A share of the costs, often security, housekeeping and the lift, is split equally, and the rest by area. The slider above shows how the split changes each flat's bill.

Whichever method you use should be written in the bylaws or passed by the general body, and the rate should be shown on every bill. Our guide to society maintenance charges covers what the charges include and who pays them, and the GST guide works through the ₹7,500 rule.

Once you know each flat's amount, Aangan bills it every month, adds late interest on the day your rule says, and sends the receipt on WhatsApp when the flat pays.

Calculation questions

Per sq ft rates, interest and GST, answered briefly.

Add up the society's monthly expenses and divide by the total area of all flats. That gives the rate per sq ft. Multiply the rate by a flat's area to get its maintenance. For example, ₹1,20,000 of expenses over 48,000 sq ft is ₹2.50 per sq ft, so a 1,200 sq ft flat pays ₹3,000 a month.

Useful next

Set the rule once. Aangan bills it every month.

Per sq ft or flat-wise charges, late interest by your bylaws, and receipts on WhatsApp.