Burn Rate & Runway Calculator

Know your burn before you resign safely. Model income changes, expenses, and hiring plans easily. See runway months and pick timelines with clarity now.

Calculator Inputs
Use the fields below and press calculate. Results appear above.
Cash & Currency
Cash you can use for your transition period.
Optional: reserve money you won’t spend.
Subtract this from runway for caution.
Income & Taxes
Salary, freelance, or expected monthly inflow.
A simple estimate applied to monthly income.
Optional: expected income increase rate.
Costs & Projection
Rent, subscriptions, loan payments, insurance.
Food, transport, utilities, flexible spending.
Courses, equipment, moving, certification fees.
Monthly Growth
Optional: inflation or lifestyle changes.
Controls the detailed runway table below.
Scenario Settings
Used for the snapshot table in the results.
Example 0.15 = income +15% and costs −15%.
Example 0.15 = income −15% and costs +15%.
Run Calculation
Result will display above the form.
  • If net burn is ≤ 0, runway is unlimited.
  • Use target savings to keep money untouched.
  • Increase projection months for longer timelines.
Tip
Enter your current cash, monthly income, and monthly costs, then calculate to see burn rate and runway months.
Example Data Table
A realistic sample to understand expected output.
Scenario Starting Cash Monthly Income Monthly Costs Net Burn Runway (Months)
Learning Transition USD 12,000.00 USD 2,500.00 USD 2,500.00 USD 0.00 Unlimited
Career Pivot USD 12,000.00 USD 1,800.00 USD 2,500.00 USD 700.00 17.14
Entrepreneur Trial USD 18,000.00 USD 900.00 USD 3,000.00 USD 2,100.00 8.57
Formula Used
Definitions used by this calculator.
  • Gross Burn (Monthly Spending) = Fixed Costs + Variable Costs
  • Net Income = Monthly Income − (Monthly Income × Tax Rate)
  • Net Burn (Steady-State) = (Fixed Costs + Variable Costs) − Net Income
  • Runway (Months) = Effective Cash ÷ Net Burn (when Net Burn > 0)
  • Effective Cash = Starting Cash − Target Savings
  • Runway After Buffer = Runway − Buffer Months
  • Projection Growth: Income and costs update each month using growth rates.
If Net Burn is ≤ 0, you are not burning cash, so runway is treated as unlimited.
How to Use This Calculator
A quick workflow for career decisions.
  1. Enter your Starting Cash and a Target Savings amount to protect.
  2. Fill in your Monthly Income and choose whether to include a tax estimate.
  3. Add Fixed, Variable, and any One-time costs for month one.
  4. Set optional growth rates if your income or costs will change monthly.
  5. Choose Projection Months to see the full month-by-month runway table.
  6. Press Calculate Runway and review the scenario snapshot to stress-test your plan.
Career Planning Notes
Decision guidance based on burn and runway.

Burn rate as a decision metric

Burn rate turns a career change into a measurable plan. If your monthly costs are 2200 and net income is 1500, your steady net burn is 700. With 14000 usable cash, the baseline runway is 20.00 months. This frames how quickly you must upskill, interview, or ramp freelance work.

Runway targets for common transitions

Many professionals set a buffer of 1–3 months beyond the computed runway. For a 12‑month reskilling goal, a practical target is 15 months of runway. If your runway is short, reduce costs by 10–20% or secure a part‑time income stream to extend time without increasing stress.

How taxes change the picture

A simplified tax estimate protects against overconfidence. With gross income 2500 and tax rate 10%, net income becomes 2250. The same 2200 monthly costs shift net burn from −300 to −50, which can change “safe to pivot” into “tight timeline.” Adjust the tax rate to match your local situation.

One‑time costs and month‑one reality

Career moves often start with a spike: certification fees, devices, relocation, or interviews. A one‑time cost of 800 increases month‑one burn by 800. Tracking this separately avoids overstating ongoing burn and helps you time purchases when cash is highest.

Using growth assumptions responsibly

Income growth can model ramping clients or a staged raise, while cost growth can model inflation. A 3% monthly income growth is aggressive; validate it with pipeline evidence. If costs grow 2% monthly, a 2200 cost base becomes about 2675 after 10 months. Stress‑test optimistic and pessimistic deltas before committing.

Actionable signals from the projection table

Watch the cash line: if the chart crosses zero, you need a plan change. If the slope flattens, your income is catching up. Use the depletion month to set milestones: interviews by month 3, offer target by month 6, or expense reduction by month 2 if runway is under 9 months.


FAQs

What is the difference between gross burn and net burn?

Gross burn is monthly spending (fixed plus variable). Net burn subtracts net income from spending. Net burn tells you how quickly your cash balance changes each month.

Why does the calculator show “Unlimited” runway?

If net burn is zero or negative, income covers expenses. Cash is not being consumed, so runway is treated as unlimited. Review assumptions to ensure income is realistic.

How should I set a safety buffer?

A common buffer is 1–3 months, depending on risk tolerance and job market speed. Use larger buffers for uncertain income, health costs, or longer hiring cycles.

What inputs matter most for accuracy?

Fixed costs, reliable income, and realistic taxes matter most. One‑time costs improve month‑one realism. Growth rates are optional and should reflect evidence, not hope.

How do I use scenarios for career decisions?

Optimistic and pessimistic scenarios show sensitivity. If your plan fails under pessimistic assumptions, reduce costs, increase income certainty, or delay the transition until runway improves.

Can I plan for milestones using the depletion month?

Yes. Use the depletion month as a deadline. Set earlier checkpoints for interviews, certifications, or client acquisition so you can adjust before cash becomes constrained.

Related Calculators

startup runway calculatorcash flow runway

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.