Kas RT – Neighborhood Treasury & Resident Dues Management App A web app that helps neighborhood (RT) treasurers in Indonesia manage community funds and resident dues in one place. Features include a resident registry, monthly billing where unpaid dues automatically carry over and accumulate into each resident's total amount due, a cash-in/cash-out ledger, payment records per community meeting, receivables tracking, a cash denomination calculator for counting notes and coins, and printable meeting invitations showing each resident's outstanding bill. The dashboard shows total balance, income, expenses, receivables, and paid vs. unpaid status for the month at a glance.