Custom Financial Management Suite

I need a purpose-built piece of account-management software centred on Financial Management. The core must cover everyday tasks—Invoicing & Billing, Expense Tracking, and Financial Reporting—while also letting me pull a Monthly EMI list for any chosen date-to-date window... (Budget: ₹750 - ₹1250 INR, Jobs: Accounting, API, Invoicing, MySQL, PHP, Software Architecture, Software Development, Visual Basic)