What does an AI funding calculator do?
An AI funding calculator for startups helps founders estimate how much capital they need to reach their next business milestone. Instead of choosing a round size based on what other startups raised, the calculation can consider current burn, planned hiring, growth spending, target runway, valuation and potential dilution.
Startupply's AI Funding Calculator combines these factors into a funding recommendation designed for pre-seed, seed and Series A startups.
It sits inside the Startupply Resource Center and is free to use with an account. You answer a short series of questions about your startup, and the calculator returns a recommended raise, a monthly burn breakdown, a runway projection, and a valuation and dilution range for your stage. The result can be exported and dropped straight into a deck or an investor update.
Most founders arrive at a number one of two ways: they copy a round size they read about, or they add up a wish list. Both produce an ask you cannot defend in a first meeting. Investors do not really ask "how much do you want?" - they ask what the money buys and how long it lasts. The calculator is built around that second question.
- A recommended raise amount based on your own burn and runway, not a benchmark
- A blended monthly burn that includes salaries, growth spend and planned hires
- A dilution band and implied post-money valuation range for pre-seed, seed or Series A
- An exportable summary you can attach to a deck, data room or investor update
How the calculation works
There is no mystery in the arithmetic, and that is deliberate - an ask you cannot explain in a meeting is worse than no number at all. The calculator combines four inputs into a single figure and then reads the equity cost off standard stage bands.
- 1
Start from your base monthly burn
Everything you already spend every month: salaries for the current team, tooling, infrastructure, rent, contractors and services. This is your run-rate before any growth plans are layered on.
- 2
Add planned growth spend
Marketing, sales and any other spend meant to buy growth during the round. Keeping it separate from base burn matters, because growth spend is the part an investor will interrogate and the part you can throttle if a raise slips.
- 3
Add the cost of the hires in the plan
Each planned hire is costed at a fully loaded monthly figure - not just salary, but taxes, benefits, equipment and tooling. A team of three becoming a team of eight is usually the single largest change to burn, and the one founders most often understate.
- 4
Multiply by the runway you want
Blended monthly burn multiplied by target runway in months gives you the raw amount the plan consumes. Eighteen months is the common target: roughly twelve months of building plus a realistic fundraising window at the end.
- 5
Add a buffer for the next raise
A raise sized to the exact month the money runs out means fundraising from a position of weakness. The calculator adds a buffer on top - around fifteen per cent - so you are still solvent while the next round is being negotiated.
- 6
Read the equity cost off stage bands
Dividing the raise by the typical dilution band for your stage gives the post-money valuation your ask implies. If that number looks unreasonable for where you actually are, the ask is wrong - not the market.
The relationship worth internalising: raise ÷ dilution = post-money valuation. Ask for more money at the same dilution and you are implicitly claiming a higher valuation. Investors do that arithmetic in seconds, so it is better to do it before the meeting.
The inputs, and how to get them right
The output is only as honest as what goes in. These are the four numbers that move the result most, and the mistakes that most often distort them.
Base monthly burn
Take the last three months of actual outgoings and average them rather than using your best month. Include founder salaries even if you are not paying yourselves yet - an investor will assume you eventually will.
Example: $15,000/mo at pre-seed, $35,000/mo at seed, $90,000/mo at Series A are typical starting points.
Target runway
How many months the raise should cover. Under twelve months and you are fundraising again almost immediately; beyond twenty-four and the ask starts to look like it is buying time rather than milestones.
Example: 18 months: about 12 to hit the milestone, plus 6 to raise on the strength of it.
Planned hires
Count roles, not aspirations, and only the ones needed to reach the next milestone. Cost each at the loaded rate - roughly 1.25 to 1.4 times base salary once employment costs and tooling are included.
Example: Two engineers and one salesperson in the next twelve months.
Growth and marketing spend
The monthly amount going into acquiring customers. If you have a working channel, tie it to a target: spend, expected customers, expected payback period. If you do not have one yet, keep it modest - investors are wary of large marketing lines before a channel is proven.
Example: $10,000/mo at seed, scaling with proven payback rather than ahead of it.
What the numbers usually look like by stage
Stage changes both what the money is meant to buy and how much equity it costs. These bands are the ones the calculator uses as a starting point; your own market, geography and traction will move them.
| Stage | What the raise buys | Typical dilution |
|---|---|---|
| Pre-Seed | A working product and the first evidence that someone wants it. Small team, low burn, milestone is usually launch plus early usage. | 10% - 18% |
| Seed | Repeatable early revenue and the beginnings of a channel that works. Burn rises with the first real hires outside the founding team. | 12% - 20% |
| Series A | Scaling something that already works: hiring across functions, pushing a proven acquisition channel harder, entering new segments. | 15% - 25% |
A raise that lands outside these bands is not automatically wrong, but it needs a reason you can say out loud. Very low dilution usually means an insider round or strong competition for the deal; very high dilution usually means the round is too large for the stage, or the valuation is being set by leverage rather than traction.
Five ways founders get the funding ask wrong
- Raising to a round name. "We're raising a seed" is not a plan. The amount should fall out of the milestone and the burn required to reach it, and then be called whatever it is.
- Sizing to the exact month the cash runs out. Without a buffer you are negotiating your next round with two months of runway visible in your own data room, which is the weakest position there is.
- Costing hires at base salary. Employment taxes, benefits, equipment and software routinely add 25-40%. Ten hires undercosted by 30% is a hole big enough to shorten runway by months.
- Treating growth spend as fixed. If the channel is not proven, a large marketing line is a bet, not a cost. Model it separately so you can show what happens to runway when it is cut.
- Ignoring the implied valuation. Every ask implies one. If you do not calculate it, an investor will - and the conversation will start with their number instead of yours.
Using the calculator in Startupply
- 1
Open the Resource Center
Sign in to your Startupply account and open the Resource Center, then choose the AI Funding Calculator. Access is free and no card is required.
- 2
Answer the questions about your startup
Stage, current burn, planned hires, growth spend and the runway you are targeting. If a figure is uncertain, use the conservative end - it is easier to defend an ask that assumes things cost more than they do.
- 3
Read the breakdown, not just the headline
The result shows the blended monthly burn, the runway projection and the dilution range alongside the recommended raise. The breakdown is the part you will be asked about in a meeting.
- 4
Re-run it as a scenario
Recalculate with a leaner plan and a more aggressive one. Walking into a meeting able to say what twelve, eighteen and twenty-four months each cost, and what each one buys, is a noticeably stronger position than a single number.
- 5
Export and attach it
Export the summary and put it in your deck appendix or data room. It answers the "why this number?" question before it is asked.
Pair the output with a strategy canvas. The calculator tells you what the plan costs; a Lean Canvas or Business Model Canvas explains why that plan is the right one. Investors ask for both, usually in the same meeting.
Frequently asked questions
How much should a startup raise?
Enough to reach a milestone that makes the next round easier to raise, plus a buffer to fundraise on. In practice that is your blended monthly burn multiplied by the runway you need - commonly 18 months - with roughly 15% added on top. Round sizes copied from other companies are the most common way founders end up with an ask they cannot defend.
Is the AI Funding Calculator free?
Yes. It is free to use with a Startupply account, and no credit card is required. Results can be saved, recalculated and exported.
What is a good runway to raise for?
Eighteen months is the usual target: about twelve months of building toward the milestone and six months to raise the next round on the strength of it. Twelve months leaves almost no fundraising window, and more than twenty-four months tends to raise questions about whether the ask is buying milestones or just time.
How much equity will I give up?
Typically 10-18% at pre-seed, 12-20% at seed and 15-25% at Series A. The calculator shows where your ask lands in that band and the post-money valuation it implies, so you can see the trade before an investor prices it for you.
How is burn rate calculated?
Blended burn is your existing monthly costs, plus planned growth and marketing spend, plus the fully loaded monthly cost of each planned hire. Loaded means salary plus employment taxes, benefits, equipment and tooling - not base salary alone.
Can I use the result in my pitch deck?
Yes. The funding summary is exportable and is designed to sit in a deck appendix or data room, where it answers the "how did you arrive at this number?" question directly.
Does it work for bootstrapped or non-dilutive plans?
The burn, runway and hiring parts apply regardless of how the money is raised, so it is still useful for planning against revenue or a grant. The dilution and valuation output only applies if you are raising equity.