Ready to use
Finance & Business
Open tool Customer Logo Retention Calculator
Measure the share of opening-cohort customer accounts still active.
BUILT AROUND YOUR WORK
Finance calculators for planning and review
Compare the assumptions before comparing the answers. Put rates, payment dates, fees, and time horizons on the same basis, then show which input makes the biggest difference to your estimate.
Choose a focused workspace
Ready to use
Finance & Business
Open tool Customer Refund Transaction Rate Calculator
Measure merchant-refunded transactions within a matched completed-transaction cohort.
Ready to use
Finance & Business
Open tool Degree of Combined Leverage Calculator
Combine operating and financing sensitivity at one stated activity level.
Ready to use
Personal Money
Open tool Emergency Fund Planner
Create a bounded, browser-local emergency fund planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Personal Money
Open tool Expense Category Cleaner
Create a bounded, browser-local expense category cleaner with visible assumptions, review guidance, and downloadable output.
Ready to use
Personal Money
Open tool Financial Goal Tracker
Create a bounded, browser-local financial goal tracker with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Defensive Interval Ratio Calculator
Estimate liquid-resource coverage in days against average daily cash operating expenditures.
Ready to use
Finance & Business
Open tool Degree of Financial Leverage Calculator
Measure pre-tax earnings sensitivity created by fixed interest expense.
Ready to use
Finance & Business
Open tool Annual Recurring Revenue Growth Calculator
Compare two consistently defined ARR snapshots by amount and percentage.
Ready to use
Personal Money
Open tool Baby Cost Planner
Create a bounded, browser-local baby cost planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool ROAS Calculator
Compare attributed campaign revenue with ad spend while keeping the profit limitation visible.
Ready to use
Finance & Business
Open tool Churn Calculator
Calculate opening-cohort customer churn, retention, ending customers, and net change.
Ready to use
Finance & Business
Open tool Contract Renewal Calendar
Create a bounded, browser-local contract renewal calendar with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Debt to Capital Ratio Calculator
Express total interest-bearing debt as a share of consistently dated total capital.
Ready to use
Personal Money
Open tool Debt Snowball Planner
Create a bounded, browser-local debt snowball planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool CAC Payback Period Calculator
Estimate months of monthly gross profit required to recover supplied CAC.
Ready to use
Personal Money
Open tool Cash Envelope Planner
Create a bounded, browser-local cash envelope planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Invoice Number Generator
Generate a bounded padded invoice-reference sequence without reserving numbers.
Ready to use
Finance & Business
Open tool Contribution Margin Planner
Create a bounded, browser-local contribution margin planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Customer Acquisition Cost Calculator
Calculate blended acquisition cost from aligned sales and marketing spend.
Ready to use
Personal Money
Open tool Bill Negotiation Script
Create a bounded, browser-local bill negotiation script with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Degree of Operating Leverage Calculator
Measure operating-income sensitivity from contribution margin and EBIT.
Ready to use
Tax, Payroll & Benefits
Open tool Estimated Tax Planner
Create a bounded, browser-local estimated tax planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Personal Money
Open tool Allowance Planner
Create a bounded, browser-local allowance planner with visible assumptions, review guidance, and downloadable output.