River
Y CombinatorBacked by Y Combinator
FREE TEMPLATE

Seed Round Pitch Deck Template

Every number gets a source, a definition and a date before it reaches a slide, because a deck built from memory cannot answer for itself.

Free download  ·  No account needed

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.

A seed deck usually fails in the meeting after the one where it worked. It gets built once, from memory and from whatever was on screen that week, and every number in it is true on the day it is typed. Then diligence asks where a figure came from, and the honest answer is that somebody computed it once, in a spreadsheet that is gone, on a definition nobody wrote down. A number you cannot re-derive looks exactly like one you can, because both are digits on a slide.

So this pack builds the deck from the evidence sheet rather than the other way round. Every number gets a row carrying four fields: source, definition, as-of date and owner. Then everything that can be re-derived gets re-derived from the source, without looking at the slide. On the worked example, twenty-nine of forty-one numbers could be re-derived, eighteen came back identical, and eleven moved. Nine of the eleven moved down. The two that moved up were acquisition cost and its payback, where up is the worse direction.

Nobody had lied. Every ambiguous definition had been resolved once, quickly, at the moment of writing. The story then gets written from what survived, which is the opposite of the usual order and the reason it holds: a narrative built first and evidenced later always contains one claim the evidence will not support. That claim will be the most memorable line in the deck. It sits beside the data room the same round needs.

One deck, forty-one numbers, traced one at a time

Where 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.

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%RecollectionNo source
M-13ARR$1.24MBilling platform$1.11MMoved down
M-15Net revenue retention118%Spreadsheet nobody can findNo 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 reportNot ours
M-34Median sales cycle34 daysSpreadsheet nobody can find47 daysNo source
M-36Qualified pipeline$840,000RecollectionNo source
M-40Committed so far$500,000RecollectionNo 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.

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.

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.

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.

What's in the pack

01

Metric Backup

One row per number on the deck, carrying its source, its definition, its as-of date, its owner, the re-derived value and a verdict.

02

Definition Ledger

One row per contested word: customer, active, MRR, churn, qualified, reachable. The chosen definition, what it excludes, and every place it has to change.

03

Inconsistency Register

One row per appearance for any metric showing up twice at two values, with exactly one marked canonical and the decision that resolves the rest.

04

How Every Number Was Traced

The full worked audit: forty-one numbers, five source classes, the eighteen that held, the eleven that moved, and the four that left the deck.

05

Narrative Outline

Fourteen slides, each naming the numbers it is allowed to use, written after the backup sheet rather than before it.

06

Deck, Slide by Slide

The content of every slide with each figure carrying its backup row. Words and numbers, not design, so nothing looks finished before it is traced.

07

Appendix Notes

What answers a question rather than making an argument, so a slide can carry one number and a pointer instead of six numbers and no room.

08

Objection Preparation

One question per number that invites one, marked where it is blocked on a definition nobody has chosen yet.

How to use it

  1. 1

    Open in River, or download it

    Take the blank documents and sheets away with no account, or install the pack in River and hand it the deck you already have plus the exports behind it.

  2. 2

    Inventory, then source

    Every numeral that makes a claim gets a row, in slide order. Then four fields each, and each source sorted into one of the five classes.

  3. 3

    Re-derive, and count the direction

    Compute each re-derivable figure again from the source, without looking at the slide. Report how many moved down and how many moved up.

  4. 4

    Write the story from what survived

    Decide the contested definitions, resolve the register, then draft the narrative and the slides from the rows that hold. Objections come last.

Frequently asked questions

Is this template free?

Yes. Three sheets and five documents download as Word and CSV files with no signup and no watermark. Opening the pack in River, where the agent inventories your deck and re-derives the numbers against your own exports, needs a free account. The blank files are useful on their own, and the other packs sit in the template library.

Does it produce the actual slides?

It produces the words and the numbers of every slide, each traced to a backup row, ready to lay out wherever you build decks. It does not render a PowerPoint file. Design is fast and content is slow, and a deck that looks finished before its numbers are traced is the failure this pack prevents.

How is this different from a pitch deck template?

A template gives you fourteen empty slides and an order. That is the part founders already have. What breaks a deck in diligence is a number nobody can produce again, so the artifact here is the backup sheet, and the slides are written from it rather than filled in beside it.

What if a number turns out to have no source?

Three outcomes, and one of them is that it leaves the deck. Recompute it from data that survived, restate it as a range with the basis named, or remove it. Four of the worked example's nine unsourceable numbers came off, and two of those four were a churn rate and a retention claim.

Is a deck a legal document?

It can be. Under SEC Rule 10b-5 it is unlawful, in connection with buying or selling a security, to state an untrue material fact or omit one needed to keep what you did say from misleading. Have a lawyer in your jurisdiction review the deck.

Can I post the deck publicly?

Ask counsel first. A private placement relying on Rule 502(c) may not be offered or sold by any form of general solicitation or general advertising, which is broader than most founders assume. Nothing here is legal advice, and how a deck circulates is a legal question.

What should I have ready before starting?

The deck, if one exists, and the places its numbers come from: billing exports, the general ledger, product analytics, the CRM, and the spreadsheets you actually open. A clean cap table helps the ask slide, a dated investor target list decides who receives it, and term sheet mechanics come later.

Find out how many of your numbers cannot be produced again

Download the blank pack as Word and CSV files, or open it in River and get the count, the headline number as it actually is, and the one definition that unblocks the most questions.

Edit with AI