Capital raising starts with what the money must prove

Capital raising means securing external funding for a business, commonly through equity, debt or convertible securities. For an early-stage technical founder, the useful question is not simply “How much can we raise?” It is “What uncertainty will this money resolve, and what company will we have when it runs out?”

Start with a financing plan, not a deck: a measurable milestone, the cash required to reach it, and the ownership or repayment obligations you can accept.

1. Define what the capital must prove

“Hire engineers and grow” describes spending. It does not describe progress.

Choose a milestone that changes the evidence about your company. For example:

• Developer tools: teams repeatedly use the product in production, and an identifiable buyer pays for it.
• Data infrastructure: deployments meet customer reliability and performance requirements without continuing founder intervention.
• Applied AI: customers pay for a workflow whose pricing covers inference, support and required human review.

Specify the test, deadline and measurement method. “Convert five pilots into paid production deployments within 12 months” is testable; “become the leading platform” is not. Five is an illustrative planning target, not an investment threshold.

Separate technical proof from commercial proof. A benchmark can demonstrate speed without showing willingness to pay. A paid pilot can demonstrate interest without proving renewal.

YC’s seed fundraising guide recommends tying the amount raised to a believable plan and, where further financing is needed, the next fundable milestone. Treat that as a planning principle—not a guarantee that achieving your chosen milestone will attract another round.

2. Calculate the raise from a monthly cash forecast

Use this starting equation:

Target raise = forecast net cash outflows through the milestone and contingency period + one-off costs + required ending cash reserve − usable cash at closing.

An illustrative software company expects:

Planning input	Amount
Average monthly net cash burn	$50,000
Time to milestone after closing	12 months
Contingency period	4 months
One-off costs not included in burn	$80,000
Required ending cash reserve	$50,000
Usable cash expected at closing	$200,000
Calculated raise	$730,000

The calculation is $50,000 × 16 + $80,000 + $50,000 − $200,000. It is a budget example, not a recommended round size, reserve or runway standard.

Build the underlying forecast month by month. Hiring dates, annual software bills, customer payment delays and cloud commitments make cash needs uneven. Check that no month’s closing cash falls below your required operating buffer: a period-total calculation can hide an earlier cash shortfall. For AI products, stress-test usage and inference costs rather than assuming revenue growth automatically improves cash flow.

Use collected customer cash, not booked revenue, and exclude uncommitted financing. Keep the cash needed to survive fundraising separate: money expected at closing cannot pay bills before closing. The burn-rate and runway guide explains the cash distinctions.

Prepare two executable budgets: a minimum plan that still reaches meaningful proof, and a target plan that accelerates it. Decide which hires and projects disappear if the round is smaller.

3. Match the financing to the risk

Venture capital is not interchangeable with a loan. The U.S. Small Business Administration describes VC as equity-oriented financing for high-growth companies, accepting higher risk in pursuit of higher returns.

Use that distinction to assess fit:

• Customer-funded growth: consider it when paid development or existing revenue can finance the next test. Protect product direction from becoming a series of bespoke projects.
• Angel or venture equity: consider it when substantial uncertainty remains and the potential business supports investors’ return expectations. Assess the investor’s mandate, not just willingness to meet.
• Debt: consider it only with a credible repayment source. A hoped-for future equity round is a fragile repayment plan.

A SAFE is an instrument, not a separate source of capital. YC describes it as a contract providing funding now in exchange for rights to future shares, with conversion at a priced round. Its forms and guidance also recommend advice from a lawyer licensed where the company was formed; do not assume a U.S. form fits every jurisdiction.

4. Model ownership before agreeing to terms

For a simple priced round with one new investor, no converting securities and no option-pool changes:

New investor ownership = investment ÷ (pre-money valuation + investment).

A $1 million investment at a $4 million pre-money valuation gives the new investor 20% ownership. Existing holders retain 80% collectively before other changes.

For YC post-money valuation-cap SAFEs, investment divided by the post-money cap can estimate ownership sold before the priced round, but it is not a universal conversion result. YC’s SAFE user guide warns that conversion at a valuation below or too close to the cap may produce more ownership than estimated. New capital in the priced round and an accompanying option-pool increase also dilute SAFE holders.

Model every outstanding SAFE, note, option and side letter together. Use a cap-table model, not a collection of isolated percentages.

5. Make the plan easy to diligence

Your first pitch should connect five things: customer problem, distinct insight, evidence so far, funding ask and milestone. Keep supporting materials consistent: product demo, metric definitions, monthly cash forecast, cap table, customer agreements and IP ownership records.

Before investing heavily in an investor conversation, ask about check range, stage and geographic fit, lead versus follow role, decision authority and remaining diligence. For the sequence from pitch to funded cash, see the VC process guide.

A useful fundraising brief can fit in one paragraph:

We are raising an amount justified by our monthly cash plan to reach a defined technical and commercial milestone by a specified date. The budget includes contingency, identifies what changes in a smaller raise, and models the ownership impact.

If you cannot complete that paragraph concretely, resolve the missing operating assumptions before polishing the pitch.