Best debt payoff calculator for agencies

There are roughly 40-60 debt payoff calculators floating around the market, but almost none are purpose-built for agencies. The gap exists because most tools assume W-2 income stability; they fail when you're dealing with irregular revenue streams, multiple client payment cycles, or project-based budgeting. Agencies struggle with debt repayment planning because traditional calculators ask for static monthly income—something that doesn't exist when you're juggling retainers, one-time projects, and seasonal client work. The real opportunity isn't in building another generic debt payoff tool; it's in creating one that ingests actual invoice data, models cash flow scenarios based on historical payment patterns, and recommends payoff strategies aligned with agency cash cycles. A vibecoder entering this space should focus on integrations (Stripe, FreshBooks, Wave) that pull real agency financials, scenario modeling for 'what if we lose Client X,' and a dashboard that shows debt payoff timelines based on realistic revenue projections rather than guesswork.