# Business Calculators

BasedInbox includes financial calculators to help you understand your business metrics. Calculate runway, analyze unit economics, and project growth.

# Available Calculators

# Runway Calculator

How long until you run out of cash?

Inputs:

• Cash balance — Current cash on hand
• Monthly burn rate — Net cash outflow per month

Output:

• Months of runway — Time until cash depleted

Burn rate methods:

• Average — Mean of last 3-6 months
• Latest — Most recent month only
• Weighted — Recent months weighted higher

# Unit Economics Calculator

Understand your customer profitability:

Inputs:

• Monthly revenue — From transactions or manual
• Customer count — Active paying customers
• CAC — Customer Acquisition Cost
• Churn rate — Monthly customer loss (%)

Outputs:

• ARPU — Average Revenue Per User
• LTV — Lifetime Value
• LTV:CAC ratio — Profitability indicator
• Payback period — Months to recover CAC

# Growth Calculator

Project future revenue:

Inputs:

• Starting revenue — Current monthly revenue
• Growth rate — Monthly growth percentage
• Time period — Projection length

Outputs:

• Projected revenue — Future revenue at each period
• Cumulative revenue — Total over the period
• Growth trajectory — Visual chart

# Using the Calculators

# Accessing Calculators

1. Go to Dashboard > Business
2. Click Calculators in the sidebar
3. Select the calculator you need

# Data Sources

Calculators can pull data from:

• Transactions — Automatic calculation from your data
• Manual input — Enter values directly

# Saving Settings

Your calculator inputs are saved:

• Per workspace
• Automatic persistence
• Override defaults anytime

# Runway Calculator

# Understanding Runway

Runway tells you how long your business can operate at the current burn rate before running out of cash.

Formula:

Runway (months) = Cash Balance / Monthly Burn Rate

# Calculating Burn Rate

Burn rate is your net cash outflow:

Burn Rate = Expenses - Revenue

From transactions:

• Sum all expense transactions
• Subtract revenue transactions
• Average over selected period

Manual override:

• Enter your known burn rate directly
• Useful for projections or adjustments

# Scenario Planning

Use the calculator to model scenarios:

• Baseline — Current burn rate
• Best case — Reduced spending
• Worst case — Increased burn

# Extending Runway

The calculator shows options to extend runway:

• Reduce expenses by X%
• Increase revenue by X%
• Raise funding of $X

# Unit Economics Calculator

# Why Unit Economics Matter

Understanding LTV:CAC tells you if your business model is sustainable:

# Key Metrics

# Customer Acquisition Cost (CAC)

Total cost to acquire one customer:

CAC = Marketing Spend / New Customers Acquired

Include:

• Advertising spend
• Marketing team salaries
• Sales commissions
• Software tools

# Lifetime Value (LTV)

Total revenue expected from one customer:

LTV = ARPU / Churn Rate

Or more precisely:

LTV = ARPU × Gross Margin × (1 / Churn Rate)

# Payback Period

Months to recover acquisition cost:

Payback = CAC / (ARPU × Gross Margin)

# Using Transaction Data

The calculator can analyze your transactions:

1. Enable "Use transaction data"
2. Select date range
3. Categories to include as COGS
4. Calculator computes metrics automatically

# Manual Mode

Enter values directly:

• Monthly revenue
• Customer count
• CAC amount
• Churn percentage

# Growth Calculator

# Compound Growth

See how growth compounds over time:

Future Revenue = Current × (1 + Growth Rate)^Periods

# Growth Scenarios

Model different growth rates:

• Conservative — 5-10% monthly
• Moderate — 15-25% monthly
• Aggressive — 30%+ monthly

# Visual Projections

The calculator shows:

• Line chart of projected revenue
• Month-by-month breakdown
• Cumulative totals
• Comparison to current trajectory

# Milestone Planning

Set revenue milestones:

• When will you hit $10K MRR?
• When will you hit $100K ARR?
• What growth rate is needed?

# Best Practices

# Regular Reviews

Check your metrics regularly:

• Weekly — Cash position and burn
• Monthly — Unit economics
• Quarterly — Growth projections

# Data Accuracy

For reliable calculations:

• Keep transactions up to date
• Categorize accurately
• Include all relevant expenses
• Track customer counts

# Benchmarking

Compare to industry benchmarks:

# Action Items

Use calculators to drive decisions:

• Low runway — Cut expenses or fundraise
• High CAC — Optimize marketing channels
• High churn — Improve product/service
• Low growth — Invest in acquisition

# Integration with Reports

# Dashboard Widgets

Add calculator summaries to your dashboard:

• Runway countdown
• LTV:CAC indicator
• Growth chart

# Automated Alerts

Set up alerts for:

• Runway below X months
• Burn rate increasing
• Churn rate spiking

# Export Data

Export calculations for:

• Investor updates
• Board presentations
• Financial planning

# FAQ

# How often is data updated?

Transaction data updates in real-time as you add new transactions.

# Can I customize the formulas?

The standard formulas are fixed, but you can override any input value.

# Do you support multiple currencies?

Yes, calculations use your workspace's default currency with automatic conversion.

# Can I share calculator results?

Export to PDF or share a link to specific calculations.

# Next Steps

• Transactions — Track your financial data
• Claims — Generate expense reports
• Settings — Configure calculator preferences