Startup Runway: Can You Afford Your Next Hire?

Startup runway estimates how long your available cash can fund operations at your current net cash burn. The quick formula is available cash divided by monthly net burn. Before hiring, add a 13-week cash forecast: average burn cannot tell you whether the bank balance covers a particular payroll date.

This guide is for Israeli startup founders and business owners adding employees before collections, recurring revenue or funding are predictable. The goal is a concrete decision: hire now, delay the start date or change the commitment—not simply calculate a reassuring number.

How Do You Calculate Startup Runway?

Runway in months = available cash ÷ monthly net cash burn. Net burn is operating cash payments minus operating cash receipts over the period. For this operating view, keep fundraising and borrowing separate from customer receipts.

For an illustrative company with ₪600,000 available, ₪180,000 in monthly operating cash payments and ₪120,000 in receipts, net burn is ₪60,000 and the simple runway estimate is 10 months. These are invented planning numbers, not a salary benchmark or a recommendation.

Use cash you can actually deploy. Identify restricted deposits, client money or other balances unavailable for operations. Do not count an unsigned investment term sheet as money in the bank. If net burn is zero or negative, this formula does not produce a useful finite runway; forecast cash directly instead.

The weakness of the 10-month answer is timing. An annual subscription renewal or a customer paying several weeks late can push cash down long before the monthly average suggests.

Build a 13-Week Cash Flow Forecast

A 13-week forecast is a short-term planning convention, not a legal requirement. Create one column per week and record when cash is expected to hit or leave the bank—not when revenue or expenses are booked.

Avoid double counting payroll: if you enter gross salary as an outflow, do not add its included employee deductions again. If you use net pay, show the related remittances separately. Include employer costs in addition to salary where applicable.

For Israeli companies with dollar receipts and shekel expenses, reconcile all accounts and model conversion timing and fees. Use consistent exchange-rate assumptions, then test a less favorable rate. Ask your accountant to confirm tax payment timing; this article does not prescribe tax rates or due dates.

Worked Example: A Hire Meets a Late Customer Payment

The following one-week example is entirely illustrative. “Baseline payments” excludes the proposed hire. The hire's ₪15,000 incremental cash impact represents a hypothetical payment in that week—not a typical monthly employment cost.

If the founder has chosen an illustrative minimum cash buffer of ₪100,000, the delayed-payment scenario breaches it. That buffer is a management assumption, not a regulatory minimum or a universal recommendation. When the delayed ₪80,000 arrives, place it in its new collection week—do not remove the receivable forever.

Run this logic through all 13 weeks. A positive final balance does not cancel an earlier shortfall. Compare the lowest weekly balance in each scenario before deciding.

Model the Full Cash Impact of Hiring

Separate recurring pay from one-time onboarding costs. Depending on the role and arrangement, include employer contributions, benefits, recruiting fees, equipment, software seats and the timing of each payment. Confirm applicable employment obligations with payroll and legal advisers.

Do not immediately credit the new hire with forecast sales. A salesperson may take time to ramp; a developer may help deliver a product without producing immediate receipts. Show any assumed incremental collections explicitly and test a case where they do not arrive during the forecast period.

Compare three realistic choices: start as planned, defer the start date, or reduce the initial scope. A contractor is not automatically cheaper, and worker classification requires its own assessment.

Update the Forecast Every Week

Replace the completed week with actual bank movements, explain the largest differences, and add a new week at the end. Give each uncertain receipt an owner and an expected collection date.

Before committing to a hire, ask: What is our lowest cash balance? Which customer payment matters most? Does the decision still work without the next round? Which annual or statutory payment have we missed? What action will we take if the buffer is breached?

A 13-week view supports near-term liquidity decisions. It does not replace a longer-term operating budget, profit forecast or fundraising plan. No forecast guarantees cash availability.

Plan Your Next Hire With Aleph Accounting

Aleph's Client Advisory Services can help connect bookkeeping, payroll and forecasting into a practical hiring budget. Bring your bank balances, receivables, committed payments, proposed hire package and expected start date.

Book a cash-flow and hiring consultation or call +972-52-445-2700.

General planning information, not individual accounting, tax or employment advice.

Sources

• CFI: Cash Runway Explained
• American Bankruptcy Institute: Understanding Short-term Cash Forecasts
• Stripe: How to do a cash flow computation
• Y Combinator: How to calculate burn rate, runway, and growth rate