When should a company build custom cap table software?

Most companies should use an established platform because common instruments, filings, stakeholder communications, and ecosystem integrations are difficult to maintain. Custom development fits when a material portfolio, approval, data-residency, reporting, or integration need remains unsupported and accountable legal and finance owners can fund ongoing rule, security, and reconciliation work.

Can the software handle options, SAFEs, or convertible instruments?

It can model instruments and events defined and approved by the client's qualified legal and finance advisers. Terms, jurisdiction, amendments, conversions, vesting, cancellations, exercises, tax treatment, and disclosures vary. RaftLabs implements the approved data and calculation contract; it does not draft instruments, interpret legal rights, or provide tax, securities, or accounting advice.

How do financing and exit scenarios work?

A scenario starts from a locked ownership snapshot and applies explicit client-approved assumptions for the proposed transaction, price, pool, conversion, preference, dilution, or waterfall. It remains separate from the legal ledger until authorised events occur. Users can compare versions, inputs, and outputs without presenting a hypothetical result as current ownership or promised returns.

Can different stakeholders see different information?

Yes. Roles can restrict entities, instruments, documents, transactions, scenarios, reports, and personal data. Stakeholder views should expose only approved information. Access needs strong identity, least privilege, review, revocation, logging, export controls, retention, incident response, and support boundaries because ownership records and documents are sensitive.

How do we migrate from one cap table platform to another?

Migration without losing grant, vesting, and transaction history is the top buying concern. Rebuild ownership from underlying events rather than a hand-edited snapshot, so share counts reconcile across every view. And ask the trust question: who else can see your cap table? Data-access policy and investor-contact firewalls belong in the evaluation.

How should 409A and employee equity work?

A 409A asks what common stock is worth, not total company value. Employee equity covers grant issuance, board approval, e-signature, vesting accrual, exercise, and termination handling. HRIS sync is the underrated piece: without it, a leaver's unvested options may never get cancelled.

Do we even need a cap table platform?

The minimalist counter-voice: valuation does not change often, and spreadsheets plus a 409A provider can be enough at seed. The honest answer: a spreadsheet stops being enough when signed records tell a different story from the balanced spreadsheet: when SAFEs convert, option pools top up, and share classes dilute. The spreadsheet balanced. The signed records told a different story. Scenario modeling: what a term sheet actually costs: dilution across share classes, SAFE conversion behaviour, option-pool top-up impact, and waterfall outcomes at exit values.

We are not technical. How do we judge cap table software work?

Ask the reconciliation question: does ownership rebuild from underlying events, or is it a hand-edited snapshot? Share counts must reconcile across every view. Ask the trust question: who can see the data, and what is the investor-contact firewall? Ask the migration question: can we move providers without losing grant, vesting, and transaction history? Ask the employee question: does a leaver's unvested options cancel automatically via HRIS sync? And the stakeholder question: can different stakeholders see different information: founders, investors, and employees each see only what they should?

What does custom cap table software cost?

A focused ownership-ledger release is scoped after discovery and delivered at a fixed price. Several entities, jurisdictions, instrument types, complex waterfalls, stakeholder portals, document workflows, large migration, or external integrations add scope. Platform comparison, legal and tax advice, filings, data remediation, hosting, security, and support remain separate.

Cap Table Software Development Services

Ownership software needs one traceable path from approved instrument to current position

We design cap table software around approved securities, holders, transactions, vesting, conversions, cancellations, rounds, permissions, and reconciled ownership reports. Start by testing established platforms. Custom development fits when a material ownership, portfolio, workflow, data-residency, or integration requirement remains unsupported and the organisation can govern the ledger.

See our work

Bring the problem, the current workflow, or the existing code. We reply with a practical next step within one business day.

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The brief

Start with what is not working.

Good software decisions begin with the constraint, not a list of features or a preferred technology.

Legal records, board approvals, spreadsheets, finance, and stakeholder reports disagree about the same holder, instrument, or transaction?

A financing or exit scenario cannot be reproduced because conversions, vesting, cancellations, or rule versions are implicit in one workbook?

Plain answer

Cap table software records approved securities, holders, issuances, transfers, vesting, conversions, cancellations, and financing scenarios in a reconciled ownership ledger. Established platforms fit most companies. Custom development is justified by a material portfolio, workflow, integration, or data-control gap.

What to remember

Work from approved records and signed documents, not the spreadsheet that balanced.
One entity or portfolio workflow with approved event types is the first release; several entities, jurisdictions, or waterfalls add scope.
Established platforms stay in the decision: if a supported cap-table product fits representative events, it gets recommended.
RaftLabs does not provide legal, securities, tax, accounting, or investment advice; rule ownership stays with the client.

The spreadsheet balanced. The signed records told a different story.

A cancelled grant remained in one scenario, a conversion used an earlier term, and the holder statement matched neither the legal documents nor the board approval.

The cap table is dependable only when every position can be reconstructed from authorised events.

A cap table is an ownership ledger, not a scenario spreadsheet

Cap table software records entities, holders, instruments, authorised and issued amounts, transactions, vesting, exercises, conversions, cancellations, transfers, and adjustments. It should reconstruct a position at a chosen date and link material events to their approved source records.

Established products are the default because they package common instruments, holder workflows, reporting, and ecosystem support. Custom software earns its cost when a tested gap in portfolio structure, integration, control, or workflow matters enough to own. The software does not replace the legal record, board authority, filing, tax position, or adviser review.

A bounded cap-table offer

Entity or portfolio path first: 1; Approved instruments, events, vesting, reconciliation, and reports

Delivery timeline: Scoped; After records, advisers, acceptance examples, and integrations are available

Starting investment: Fixed price; Focused ledger, workflow, access, scenarios, reporting, migration, and handover

RaftLabs does not cite a named cap-table result on this page. Buyers should assess event modelling, calculation tests, legal-source reconciliation, permissions, scenario separation, audit history, migration evidence, security, and operating ownership. Adjacent fintech or data work is not proof that an ownership record is correct.

The first decision is not what to build.

It is whether software is the right answer at all. We use four possible recommendations before discussing a development scope.

Buy
Choose a maintained product when it handles the core workflow and the remaining gaps can be solved with configuration, a connector, or a small process change. Paying for software you do not have to maintain is often the better trade.
Run the build-vs-buy numbers
Repair
Keep the existing product when users still get value from it and the code can be understood safely. Start with evidence: where the code lives, how the data is organized, what is tested, which outside services it depends on, who can access what, and how updates go live.
Build
Own the system when the workflow shapes margin, customer experience, speed, or a product customers pay for. Start with one complete path and the system connections that path cannot work without.
Wait
Do not turn a changing policy into permanent software. Stabilise the rules, name the workflow owner, and measure the cost of the current process before paying for a product.

Not sure which path is yours? Bring it to a 30-minute call. Leave with the answer in writing.

Buy the common cap table. Only the material exception needs custom software.

Data control alone does not justify recreating a mature equity platform.

A fit

A portfolio, approval, reporting, integration, or residency requirement remains unsupported after product testing.

Legal, finance, tax, security, and technology owners can approve instruments, events, calculations, and outputs.

Approved records and representative difficult events are available for a focused release.

Not a fit

An established cap-table product fits and only setup, migration, template work, or training is missing.

The team expects software engineers to interpret instruments, determine ownership, or provide legal or tax advice.

Signed records, board approvals, event authority, reconciliation owners, or source data are incomplete.

Bounded scope

What a controlled ownership workflow may include

Instrument and event ledger

Model client-approved instrument types and append authorised issuance, transfer, vesting, exercise, conversion, cancellation, repurchase, and correction events. Preserve effective date, source document, approval, author, version, and reason so positions can be reconstructed without editing history in place.

Vesting and ownership calculations

Calculate positions from approved terms, schedules, events, and dates. Keep granted, vested, exercisable, exercised, cancelled, converted, and outstanding states distinct. Test rounding, dates, amendments, partial events, and corrections with client-provided expected results.

Scenario and transaction workspace

Copy a locked snapshot into a hypothetical financing or exit workspace. Apply explicit assumptions and compare versions without changing current ownership. Restrict sensitive scenarios, label them clearly, and record reviewers. Move only approved executed events into the ledger.

Stakeholder reports and controls

Provide approved statements, summaries, exports, documents, and notices by role. Include identity, least privilege, access review, revocation, audit, retention, backups, incident response, monitoring, reconciliation queues, and controlled support access.

Choose the cap-table path

	Approach	Use it when
Established cap-table platform	Use common equity functions and ecosystem support	Its instruments, jurisdiction, workflows, controls, and price fit.
Portfolio data integration	Keep company systems of record	A fund or office needs governed aggregation and reporting across holdings.
Scenario tool	Model proposed transactions separately	The need is analysis, not a new legal ownership system.
Custom cap-table platform	Own the ledger and workflow	A material gap justifies long-term legal, security, and product governance.

Reconcile events before calculating scenarios

Migration should begin with the approved source hierarchy: formation and governing records, board and holder approvals, instrument documents, transaction evidence, prior statements, filings, and the current workbook or platform. Conflicts enter an adviser-owned exception queue. Software cannot decide which record prevails.

Scenarios use a dated, locked starting position and explicit assumptions. They should show inputs, calculation version, rounding, exclusions, and uncertainty. A hypothetical financing, conversion, or waterfall must never appear as current ownership, a legal entitlement, tax treatment, or promised proceeds.

Delivery

From approved ownership record to a reconciled release

Four phases keep legal authority and financial validation with accountable client owners.

Phase 1
01
Define entity instrument and authority
Choose one entity or portfolio workflow, approved records, instruments, transactions, users, reports, legal owners, and acceptance criteria.
Phase 2
02
Model history and difficult events
Run representative issuances, transfers, vesting, exercises, conversions, cancellations, corrections, rounds, and scenarios through a prototype.
Phase 3
03
Set up the ledger and controls
Set up event history, calculations, permissions, documents, workflows, integrations, scenarios, reporting, audit, monitoring, and recovery.
Phase 4
04
Migrate reconcile and hand over
Parallel-reconcile approved source records, resolve exceptions with advisers, validate outputs, train operators, and transfer runbooks.

Risk

What the cap-table specification must settle

Legal authority: Qualified client advisers determine governing records, approvals, instrument terms, effective events, ownership, filings, disclosures, and corrections.
Ledger history: Use append-only authorised events, dated snapshots, versioned calculations, linked source records, review, reconciliation, and correction entries.
Scenario separation: Keep assumptions and hypothetical outputs isolated, labelled, permissioned, reviewable, and unable to alter current ownership.
Sensitive data: Define tenant and entity isolation, least privilege, exports, notices, logs, retention, deletion, backups, incidents, and support access.

Scope and price

A focused cap-table release, priced before development starts.

Start with one entity or portfolio workflow, approved event types, reconciliation, and reports.

The estimate separates platform comparison, legal, tax and accounting advice, filings, data remediation, hosting, security, support, and rule ownership.

Starting investment

Starts at $10000

Several entities, instruments, jurisdictions, portals, waterfalls, or large migrations add scope. After a 30-minute call, you get a written build, buy, repair, or wait recommendation plus first-phase direction. Free, whether or not you build with us.

Established platforms stay in the decision

If a supported cap-table product fits representative events, we recommend it.

No ownership opinion

RaftLabs works from approved records and calculations; it does not provide legal, securities, tax, accounting, or investment advice.

Choose the wider ownership-data path

Work with us

Which ownership requirement cannot fit an established platform?

Bring the entity structure, approved instruments and records, transaction history, reconciliation examples, scenarios, user roles, outputs, advisers, and control requirement.

Scope and cost agreed before work starts. No surprises. No obligation.
Working prototype within 3 weeks of kickoff.
Pay by milestone. You see progress before each invoice.
60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
All conversations are NDA-protected.

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Common questions

: Most companies should use an established platform because common instruments, filings, stakeholder communications, and ecosystem integrations are difficult to maintain. Custom development fits when a material portfolio, approval, data-residency, reporting, or integration need remains unsupported and accountable legal and finance owners can fund ongoing rule, security, and reconciliation work.
: It can model instruments and events defined and approved by the client's qualified legal and finance advisers. Terms, jurisdiction, amendments, conversions, vesting, cancellations, exercises, tax treatment, and disclosures vary. RaftLabs implements the approved data and calculation contract; it does not draft instruments, interpret legal rights, or provide tax, securities, or accounting advice.
: A scenario starts from a locked ownership snapshot and applies explicit client-approved assumptions for the proposed transaction, price, pool, conversion, preference, dilution, or waterfall. It remains separate from the legal ledger until authorised events occur. Users can compare versions, inputs, and outputs without presenting a hypothetical result as current ownership or promised returns.
: Yes. Roles can restrict entities, instruments, documents, transactions, scenarios, reports, and personal data. Stakeholder views should expose only approved information. Access needs strong identity, least privilege, review, revocation, logging, export controls, retention, incident response, and support boundaries because ownership records and documents are sensitive.
: Migration without losing grant, vesting, and transaction history is the top buying concern. Rebuild ownership from underlying events rather than a hand-edited snapshot, so share counts reconcile across every view. And ask the trust question: who else can see your cap table? Data-access policy and investor-contact firewalls belong in the evaluation.
: A 409A asks what common stock is worth, not total company value. Employee equity covers grant issuance, board approval, e-signature, vesting accrual, exercise, and termination handling. HRIS sync is the underrated piece: without it, a leaver's unvested options may never get cancelled.
: The minimalist counter-voice: valuation does not change often, and spreadsheets plus a 409A provider can be enough at seed. The honest answer: a spreadsheet stops being enough when signed records tell a different story from the balanced spreadsheet: when SAFEs convert, option pools top up, and share classes dilute. The spreadsheet balanced. The signed records told a different story. Scenario modeling: what a term sheet actually costs: dilution across share classes, SAFE conversion behaviour, option-pool top-up impact, and waterfall outcomes at exit values.
: Ask the reconciliation question: does ownership rebuild from underlying events, or is it a hand-edited snapshot? Share counts must reconcile across every view. Ask the trust question: who can see the data, and what is the investor-contact firewall? Ask the migration question: can we move providers without losing grant, vesting, and transaction history? Ask the employee question: does a leaver's unvested options cancel automatically via HRIS sync? And the stakeholder question: can different stakeholders see different information: founders, investors, and employees each see only what they should?
: A focused ownership-ledger release is scoped after discovery and delivered at a fixed price. Several entities, jurisdictions, instrument types, complex waterfalls, stakeholder portals, document workflows, large migration, or external integrations add scope. Platform comparison, legal and tax advice, filings, data remediation, hosting, security, and support remain separate.