Four calculators built for HDB upgraders, using current MAS & IRAS rules — TDSR 55%, MSR 30%, a 4.00% loan stress-test rate, 75% LTV, and 2026 stamp-duty tiers.
Based on TDSR (55%), MSR where it applies (30%), and the 4% stress rate.
Turns your flat sale into a condo budget, cash, CPF and duties included.