Cash Bleed & Runway Calculator
Use this simple calculadora to measure how fast your money is bleeding and estimate how many months of runway you have left.
Tip: if your bleed is positive, you are burning cash. If it is negative, you are generating surplus.
What “calculadora has bled” really means
Most people do not fail because of one giant financial mistake. They fail because of small leaks repeated every month. “Calculadora has bled” is a practical mindset: use a calculator, find where money is bleeding, and stop it early.
Whether you run a small business, freelance operation, startup, or household budget, your goal is the same: understand your monthly cash flow before it becomes a crisis.
The three numbers that matter most
1) Total monthly expenses
This includes fixed costs (rent, payroll, debt, software) and variable costs (marketing, utilities, travel, supplies). If you do not track both, you only see half of the story.
2) Monthly inflow
Revenue and income are the oxygen of your system. Irregular inflows can create false confidence, so use average monthly figures over at least three months whenever possible.
3) Net bleed
Net bleed is the difference between adjusted expenses and monthly inflow. If it is positive, cash is shrinking. If it is zero, you are break-even. If it is negative, you are building reserves.
How to use this calculator correctly
- Enter realistic numbers, not optimistic guesses.
- Include forgotten recurring charges (tools, memberships, storage, fees).
- Estimate cost reductions you can actually implement in the next 30 days.
- Re-run monthly to keep decisions tied to current reality.
Example scenario
Imagine you have $18,000 in reserves, spend $7,000 fixed and $2,000 variable each month, and bring in $5,500 in revenue. You identify $800 in monthly cuts.
Adjusted expenses become $8,200. Net bleed becomes $2,700. Runway is roughly 6.7 months. That single number can shape hiring decisions, marketing spend, and emergency planning.
What to do when the calculator shows red flags
Immediate (this week)
- Pause low-return spending categories.
- Renegotiate fixed contracts and subscription plans.
- Reduce payment friction for customers to improve collections.
Short-term (this month)
- Prioritize products/services with strongest margin.
- Convert one-time offers into recurring revenue where possible.
- Create a simple weekly cash review ritual.
Medium-term (next 90 days)
- Build a floor of 3 to 6 months of reserves.
- Set spend thresholds that require approval.
- Track customer acquisition cost and lifetime value monthly.
Common mistakes that accelerate financial bleed
- Confusing revenue growth with healthy cash flow.
- Ignoring small recurring expenses because they “feel minor.”
- Over-hiring before demand is stable.
- Discounting too aggressively without margin analysis.
- Waiting too long to make hard cost decisions.
Final thought: clarity beats stress
A calculator does not solve every business or personal finance challenge, but it removes ambiguity. Once you can see the bleed, you can design a plan. Use this tool monthly, update your assumptions, and make decisions early while you still have options.