Executive Summary

Many marketplace sellers and the bookkeepers who serve them struggle to produce reliable per-transaction source documents—receipts, invoice bundles, shipping records and payment proofs—leaving an estimated 6,000,000 sellers exposed to reconciliation headaches, audit risk and extra bookkeeping hours for often hundreds to thousands of micro-transactions per seller. This pain is acute for SMBs and accounting firms that must demonstrate transaction-level evidence to tax authorities and auditors. You could build a cloud service that automatically assembles audit-ready per-transaction bundles by ingesting marketplace APIs, payment processor feeds, shipping data and buyer messages, then outputs immutable PDFs/JSON bundles with cryptographic timestamps, searchable storage and direct integrations to QuickBooks/Xero and bookkeeping workflows. Low-friction onboarding, webhooks for real-time delivery and a target ACV of ~$1,000 per seller would make the product practical for small sellers and firms. The market is attractive right now: a $6.0B addressable market (6M sellers × $1,000 ACV), a market score of 92/100 and strong tailwinds from e-commerce growth, accounting automation adoption and rising regulatory scrutiny that demand clearer source documentation. These trends lower the barrier to adoption and create recurring revenue opportunities with bookkeeping and marketplace channel partners. You can differentiate by shipping deep, certified integrations with major marketplaces, offering tamper-evident evidence (hashing/timestamping) and building auditor-accepted templates and partner distribution through bookkeeping networks. Be upfront that the hard parts are maintaining many connectors, managing privacy and storage costs, and overcoming medium-level competition—focus early on a few high-volume marketplaces and demonstrable ROI for bookkeepers to gain traction.

Market Opportunity

Automate creation of per-transaction source documents for marketplace sellers targets a $6.0B = 6,000,000 marketplace sellers × $1,000 ACV total addressable market with medium saturation and a year-over-year growth rate of 12% YoY — growth driven by continued e-commerce expansion and rising compliance requirements.

Key trends driving demand: E-commerce growth — more SMBs sell via online marketplaces, increasing the number of small transactions that require reconciliation and audit trails.; Accounting automation adoption — small businesses and bookkeeping firms are adopting automated syncs and reconciliation tools, which lowers the barrier to using a transaction-level documentation product.; Regulatory and auditor scrutiny — tax authorities and auditors are demanding clearer source documentation for digital sales, creating demand for per-transaction evidence.; API maturity and headless integrations — payment providers and marketplaces expose richer APIs, making it easier to reliably capture transactions and link to source pages..

Key competitors include A2X, Synder, Bench (bookkeeping services).

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Automate creation of per-transaction source documents for marketplace sellers

Executive Summary

Market Validation

Market Opportunity

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