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Seed Round Pitch Deck Template

Slide-by-slide content for a 14-slide seed deck, plus sheets to give every number a source, a definition and a date before investors ask.

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What you get

Pack of 8 files: 5 documents, 3 spreadsheets

Seed Round Pitch Deck Template
  • How Every Number Was TracedDocument
  • Narrative OutlineDocument
  • Deck, Slide by SlideDocument
  • Appendix NotesDocument
  • Objection PreparationDocument
  • Metric BackupSpreadsheet
  • Inconsistency RegisterSpreadsheet
  • Definition LedgerSpreadsheet
RiverSeed Round Pitch Deck Template

Metric Backup

[Company], Inc. — [round] deck, [n] slides, as of [date]

One row per number on the deck. A row missing any of the four fields does not go on a slide.

IDSlideMetricValue on deckSourceDefinitionAs ofOwnerRe-derivedVerdict
M-01—————————
M-02—————————
M-03—————————
M-04—————————

Source has five values, and it decides what can be done about the number

A system of recordBilling, the ledger, product analytics, the CRM. Re-derivable today and re-derivable next year
A spreadsheet that existsFindable, openable, formulas readable. The formula is the definition whether or not anyone wrote one
A spreadsheet nobody can findComputed once, correctly, in a file that has been overwritten. Cannot be produced again
Somebody's recollectionNo artifact of any kind. Usually the pipeline figure, often a churn rate
A third-party reportCheckable, but not by you. Record whether anyone here has read it, and what market it covers

On a slide, the third class looks exactly like the first. The only way to tell them apart is to try to re-derive each one, before somebody else asks you to.

Page 1 of 1221 words

How to build a seed round pitch deck

A seed round pitch deck is the dozen or so slides you show angels and early-stage funds when you raise seed money. It covers the problem, your product, why now, traction, market, competition, team and the ask. A good one makes one point per slide. It also backs every number with a source, a definition and a date, so it holds up when an investor asks where a figure came from.

Build the evidence before the story. In Y Combinator's guide to seed fundraising, Geoff Ralston writes that investors want founders with a believable dream and as much evidence as possible documenting the reality of that dream1. A deck written first and checked later tends to rest its best line on a number nobody can reproduce.

Two smiling men sitting side by side at a table, looking at a laptop together
Agree on what every number means before anyone builds a slide. Photo: DISRUPTIVO on Unsplash

List every number before you write a slide

Open a spreadsheet before you open a slide tool. Give every number you might show its own row, from revenue and growth to market size and how you'll spend the round. If a deck already exists, copy out every figure that makes a claim, including those in sentences, chart axes and the appendix.

Each row needs four fields, and a number stays off the slides until all four are filled:

  • Source: the system or file it comes from, such as billing, the ledger or the CRM
  • Definition: what it counts and what it leaves out
  • As-of date: the day it was true
  • Owner: the person who can explain it without opening a laptop

Notice which sources you can go back to. A billing or ledger number can be pulled again next month. One from an overwritten spreadsheet, or from memory, can't. On a slide the two look identical, so sort them now, while there's time to rebuild the ones you can't trace.

Define each metric once

When two slides disagree, the cause is often two correct numbers counted two ways. Andreessen Horowitz, which meets thousands of founders a year, says ARR should exclude one-time fees and professional service fees2. Customer acquisition cost (CAC), it adds, should be the full cost of acquiring a customer.

Words to define first

WordWrite downHow it gets flattered
CustomerPaying accounts at period end, and whether trials countCounting trials, free accounts or every account ever opened
ARRRecurring monthly revenue at period end, times 12Folding in setup, implementation or service fees
ChurnWho left, out of whom, over which windowNo window stated, or upsells netted against losses
Gross marginWhich costs come off revenue: hosting, support, payment feesSubtracting hosting and nothing else
Acquisition costWhich costs count, and which new customers they boughtAd spend only, spread over every new customer
PipelineWhat makes a deal qualifiedA total remembered from a sales meeting

Then use one definition everywhere, appendix and financial model included. If the traction slide says 148 customers and the appendix says 143, keep the count an investor could rebuild from your billing export. Rename the other (143 might really be active accounts) or cut it.

Recompute the numbers, then the ratios

Checking a number against its own file proves little, because the file is often where the error sits. Recompute it instead: go back to the raw export, apply the written definition and work it out without looking at the slide. Note whether it moved, and which way.

Honest slips fall both ways. If nearly every change goes against you, the deck's judgment calls leaned your way. Restate those numbers before an investor finds them.

Work out ratios last, from inputs on one basis. David Skok, an emeritus partner at the venture firm Matrix, calculates months to recover CAC3 as acquisition cost divided by the monthly gross profit from an average customer. If the inputs come from different files, the answer can be far off even when each is right.

ExampleOne payback figure, recomputedAn illustrative example written for this guide, drawn from the template's made-up sample deck.

Payback in months = acquisition cost ÷ (monthly revenue per account × gross margin)

On the slide: $4,100 ÷ ($698.20 × 78%) = 7.5 months

Recomputed: $5,340 ÷ ($626.71 × 71%) = 12.0 months

  • Acquisition cost. The slide counted paid marketing only. Adding the sales team's cost raised it to $5,340.
  • Revenue per account. Five fixes, led by removing one-time fees and a departing pilot, cut it to $626.71.
  • Gross margin. 78% subtracted hosting alone. Counting support salaries and payment fees gave 71%.
  • The result. Payback is 59% longer, yet each input was right on its own definition.

A unit economics model settles what counts as acquisition cost first, then works out payback for each group of customers.

Write the pitch deck slides last

Write the story from the numbers that survived. Give every slide one point and only the numbers it needs to make it. Title, product and team slides need none.

Which numbers go on which slide

SlideThe one pointNumbers it may use
ProblemWho has it and what today's workaround costs themThe cost of that workaround
TractionThe strongest true fact about demandRevenue, growth, customers, retention
MetricsUnit economics on one basisARR, gross margin, acquisition cost, payback, burn
MarketCustomers you can reach, at your own priceReachable accounts and yearly revenue per account
The askThe amount, the instrument and what it buysRound size, use of funds, runway, signed commitments

Build the market slide from the bottom up: customers you can reach today, times what each pays a year. Ralston's guide lists ridiculous or silly market size numbers without clear justification1 among the mistakes to avoid.

For business customers, the Census Bureau's County Business Patterns4 counts US establishments with paid employees, by industry and size. If you cite a report, read it yourself, not a post quoting it, and check that its market matches yours.

Aaron Harris's seed deck template for Y Combinator ends with the ask: how much money you need, and what it gets you5, ideally showing where you'll be within a year. Ralston suggests sizing the round by the months of operation it funds, usually 12 to 18. He also writes that most Silicon Valley seed rounds are SAFEs or convertible notes, so name yours.

A SAFE and note conversion calculator shows what each investor would own after your next priced round. Count only signed money as committed, and give any grant its status: awarded, applied for or planned.

Back up each slide, then rehearse the questions

Ralston advises founders not to spend too much time developing diligence documents1 for a seed round. You do need the backup behind each slide: definitions, the unit economics build and, if revenue changed, a bridge from the old figure to the new. A startup data room checklist covers what investors ask for later.

Put that backup in an appendix that agrees with the slides. Then write the question each number invites, because that's how questions arrive: "Walk me through the 78% margin." If several answers wait on one undecided definition, settle it first.

Before the deck goes out

  • Every number on a slide has a source, a definition, an as-of date and an owner
  • Each metric has one definition, used on every slide and in the appendix
  • Ratios are computed from the inputs shown beside them
  • The ask names the amount, instrument and milestone
  • Only signed money appears as committed
  • Rounding is honest: $1,113,036 can read $1.11M, never $1.2M

Have a securities lawyer review it

In the US, the SEC says all securities transactions, even exempt ones, are subject to the antifraud provisions6. They cover what you say in a meeting as well as what the deck shows. If you raise under Rule 506(b)7, you also can't use general solicitation or advertising. Have a lawyer review the deck and how you'll share it.

The template at the top of this page covers each step, worked through on a made-up company. With Edit with AI, River lists every number in your deck, checks with you where each came from and recomputes what it can. Then it tells you how many can't be reproduced.

How to use this template

Use the files on their own, or open them in River. On your own, start with the Metric Backup sheet, then write the slides in Deck, Slide by Slide. With Edit with AI, River asks for your deck and the exports behind it, then fills in Metric Backup. It recomputes what it can and tells you how many numbers can't be reproduced.

  1. Download it or open it in River

    Get the five Word documents and three CSV sheets free, or open the template in River and bring your current deck.

  2. Give every number a row

    List each figure in Metric Backup with its source, definition, as-of date and owner, or let River draft the rows.

  3. Recompute and settle definitions

    Recompute each number from its source, record one definition per word, and resolve any metric that shows up at different values.

  4. Write the slides and answers

    Draft each slide from the numbers that held up, then prepare an answer for every question those numbers invite.

What's in the template

One deck, forty-one numbers, traced one at a timeWhere each number came from, what happened when they were re-derived, how the headline moved, and the figure that changed by 59 percent with no wrong input in it.
Seed Round Pitch Deck Template
RiverMetric Backup

Metric Backup

Wendover Labs, seed round. Fourteen slides, forty-one numbers, one row each. Twelve rows shown.

IDMetricOn deckSourceRe-derivedVerdict
M-06December MRR$103,333Billing platform$92,753Moved down
M-10Customers148Billing platform148Identical
M-11Monthly logo churn1.1%Recollection—No source
M-13ARR$1.24MBilling platform$1.11MMoved down
M-15Net revenue retention118%Spreadsheet nobody can find—No source
M-17Gross margin78%unit-economics.xlsx71%Moved down
M-19Customer acquisition cost$4,100cac-model.xlsx$5,340Moved up
M-21Payback on acquisition cost7.5 mocac-model.xlsx12.0 moMoved up
M-31Cited market size$4.2BA real, dated report—Not ours
M-34Median sales cycle34 daysSpreadsheet nobody can find47 daysNo source
M-36Qualified pipeline$840,000Recollection—No source
M-40Committed so far$500,000Recollection—No source

A verbal from an existing investor is not a commitment, and describing it as one is the sort of claim that ends a process rather than a conversation. It came off the deck.

RiverWhere they came from

Where the forty-one numbers came from

SourceNumbersShareRe-derivable
A system of record2253.7%Yes
A spreadsheet that still exists717.1%Yes
A spreadsheet nobody can find614.6%No
Somebody's recollection37.3%No
A third-party market report37.3%Not by you
What happened to the 29 that could be re-derivedCount
Came back identical18
Moved down9
Moved up, both of them acquisition cost and its payback2
What happened to the 9 with no source at allCount
Recomputed from scratch, from data that survived3
Removed from the deck4
Restated as a range with the basis named2

Nine down and two up is not what honest random error looks like; that would be roughly even. Up is the worse direction for both of the two, so all eleven moved against the company.

RiverThe headline

The headline number, re-derived

December MRR as the deck reported it, then each adjustment the re-derivation found.

LineEffect
Reported on the deck$103,333
One-time implementation fees booked in December−$6,500
A pilot that gave notice on 18 December−$4,200
An annual prepay recognised as a single month−$1,750
A seat expansion effective 1 December, never added+$1,050
An expired discount still being applied+$820
Re-derived$92,753
So the ARR slideValueShown as
On the deck$1,239,996$1.24M
Re-derived$1,113,036$1.11M
Difference$126,96010.2% high

Three items out, two in. Every one of the five is defensible on its own, and the same pass found all five, which is the argument for running the pass rather than arguing any single line.

RiverWhere it compounds

Three separate corrections, one derived number

Payback on acquisition cost. Each side computed on its own basis, so this is not a mixed comparison.

InputOn the deckRe-derivedWhy it differs
Acquisition cost$4,100$5,340Paid spend only, against paid spend plus loaded sales cost
Monthly revenue per account$698.20$626.71Uncorrected MRR in the numerator
Gross margin78%71%Hosting only, against hosting plus support and payment fees
Payback7.5 months12.0 months59% longer, with not one wrong input
And the same word, three timesValueDefinition behind it
Traction slide148Paying accounts at 31 December
Market slide, bottom-up build156Accounts ever created, less hard-deleted
Appendix cohort table143Accounts with activity in the last 30 days

All three are correct and none answers the same question. What an investor finds there is not a discrepancy in the business, it is the absence of a decision, and one decision unblocked six of the fourteen prepared objections.

  • How Every Number Was TracedA worked audit of a made-up company's 41 deck numbers: where each came from and which ones moved.
  • Narrative OutlineThe 14-slide order, the one point each slide must land and the numbers it may use.
  • Deck, Slide by SlideFill-in content for all 14 slides, with each figure keyed to its row in Metric Backup.
  • Appendix NotesWhat belongs in the appendix, from definitions to the revenue bridge, and what to leave out.
  • Objection PreparationInvestor questions keyed to specific numbers, with the made-up company's answers as models.
  • Metric Backup sheetOne row per number on the deck: source, definition, as-of date, owner, recomputed value and next step.
  • Inconsistency Register sheetEach metric that appears at more than one value, with one marked canonical and the decision that fixes it.
  • Definition Ledger sheetOne chosen definition per contested word, what it excludes and every place it must change.

Common questions

What should a seed round pitch deck include?

Start with eight core slides after the title: the problem, your product, why now, traction, market, competition, team and the ask. Add a metrics slide for unit economics and a go-to-market slide once you have the numbers. Put metric definitions, cohort tables and the market build in an appendix that agrees with the slides.

How many slides should a seed pitch deck have?

Aim for 10 to 15 slides, with an appendix behind them for detail. This template uses 13 content slides and an appendix pointer. Y Combinator's seed deck template treats each section as one to three slides and calls one ideal. If a slide has nothing true to say yet, cut it.

Does the template include slide designs?

No. Deck, Slide by Slide sets out each of the 14 slides as a headline and points to fill in, with every figure tied to a row in Metric Backup. Lay them out in PowerPoint, Keynote, Google Slides or any design tool after the numbers are traced. Design is quick once the content holds up.

What if a number in my deck has no source?

Rebuild it from raw data that still exists, restate it as a range with its basis named, or take it off the deck. Rewording it or moving it to the appendix doesn't help, because you're still claiming it. In the template's example, four of nine unsourced numbers came off, including a churn rate.

Is this seed pitch deck template free?

Yes. Download the five Word documents and three CSV sheets with no signup. The sheets and two of the documents come filled in for a made-up company, so you can see a full audit before clearing them. Edit with AI opens the same template in a free River workspace.

What does Edit with AI do?

It opens the template in River and asks for your deck, or the numbers you'd put in one, plus the files they come from. River gives each number a row in Metric Backup, names its source and works it out again where it can. Then it reports how many can't be reproduced, your real headline figure and which definition to settle first.

Can I share my pitch deck publicly?

Not until a securities lawyer has checked how you're raising. In the US, a company raising under Rule 506(b) can't use general solicitation or advertising to market its securities. Posting a deck that pitches the round may cross that line. Rule 506(c) allows it if, among other conditions, every buyer is an accredited investor and you take reasonable steps to verify that.

Sources

  1. Y Combinator. “A guide to seed fundraising.” ycombinator.com (opens in a new tab)

  2. Andreessen Horowitz. “16 Startup Metrics.” a16z.com (opens in a new tab)

  3. For Entrepreneurs. “SaaS Metrics 2.0 - Detailed Definitions.” forentrepreneurs.com (opens in a new tab)

  4. U.S. Census Bureau. “About County Business Patterns (CBP).” census.gov (opens in a new tab)

  5. Y Combinator. “How to build your seed round pitch deck.” ycombinator.com (opens in a new tab)

  6. U.S. Securities and Exchange Commission. “Frequently Asked Questions About Exempt Offerings.” sec.gov (opens in a new tab)

  7. SEC. “Private Placements — Rule 506(b).” sec.gov (opens in a new tab)

Written by

Chandler Supple

Co-founder & CEO, River

Chandler has spent the last six years working in AI, building tools for millions of users and Fortune 100 companies. In 2025, he co-founded River to build a new kind of operating system for AI agents.

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Reviewed by

Brian Joseff, Co-founder, River

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