Accounting · head to head
Carta vs Paychex

Carta
Accounting
Cap table, equity and 409A valuation software built around United States private company practice
- From
- $29/month
- Rated
- -

Paychex
Accounting
Outsourced United States payroll, tax filing, benefits and HR services with an assigned service representative
- From
- $29/month
- Rated
- -
The short version
- Each has a real cost: Carta pricing scales with the number of stakeholders on the cap table, so a company that grants options broadly pays a rising annual fee for employees and small angels who sign in once a year, and the cost keeps climbing after the round that justified it is spent.; Paychex pricing is quoted rather than published and varies between clients and between renewals, with separate charges for each payroll run, off cycle payments and year end processing, so two similar businesses regularly pay very different amounts for the same service and comparing quotes is difficult by design.
- They diverge on capability: Carta covers Cap table of record, Paychex covers Payroll processing.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which Carta and Paychex actually diverge.
Identical on both: starting price ($29/month), pricing model (subscription), free tier (No), platforms (Web, Ios, Android), user rating (Not yet rated), category (Accounting).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Carta
- Cap table of record
- 409A valuations
- Electronic issuance
- Vesting and exercise
- Employee portal
- Scenario modelling
- Waterfall analysis
- ASC 718 expense reporting
Only in Paychex
- Payroll processing
- Payroll tax filing
- Year end forms
- Multi state payroll
- Garnishments
- Time and attendance
- Benefits administration
- Retirement plans
What people use each for
The jobs each tool is most often brought in to do.
Carta
- A startup that has just closed a priced round and whose investors and counsel expect the cap table to live somewhere they can read itnot Paychex
- A company issuing options to employees for the first time and needing a defensible 409A before it can set a strike pricenot Paychex
- A finance team preparing its first audit and needing ASC 718 stock compensation schedules that tie to the grant recordsnot Paychex
- A venture fund that wants LP reporting, capital calls and SPV administration handled outside a spreadsheetnot Paychex
Paychex
- A United States business with employees in several states that does not want to track differing withholding and unemployment rules internallynot Carta
- A small employer whose accountant recommends outsourcing payroll tax filing so the penalty risk sits with a service providernot Carta
- A growing company that wants payroll, benefits enrolment and a retirement plan administered together rather than through three vendorsnot Carta
- A small employer seeking benefits pricing through a professional employer organisation that it could not negotiate on its own headcountnot Carta
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Carta
- Pricing scales with the number of stakeholders on the cap table, so a company that grants options broadly pays a rising annual fee for employees and small angels who sign in once a year, and the cost keeps climbing after the round that justified it is spent.
- The cap table is a legal record assembled from years of board consents, so migrating to another provider means re-entering historical transactions and having counsel confirm the rebuilt table matches the signed documents, which is why most companies stay whatever they think of the service.
- The product is built around United States company law and tax practice, Delaware entities, 409A and ASC 718, so a company incorporated in the United Kingdom, Europe or elsewhere gets a record keeping tool while the valuation and compliance features that carry the price are of limited or no use.
- 409A valuations are delivered on a cadence and require a refresh after each material event or every twelve months, so a company that raises or changes materially is repeatedly back in a valuation process with fees and turnaround time attached, and a late valuation blocks option issuance.
- Carta drew sustained criticism in 2024 over how customer cap table data intersected with its secondary trading business, and although it exited that activity the episode is a live reason to check what a vendor holding your ownership record is permitted to do with it.
Paychex
- Pricing is quoted rather than published and varies between clients and between renewals, with separate charges for each payroll run, off cycle payments and year end processing, so two similar businesses regularly pay very different amounts for the same service and comparing quotes is difficult by design.
- Charging per payroll run rather than per month penalises employers who pay weekly or who run frequent off cycles, so a business with hourly staff on a weekly cycle pays several times what a monthly salaried business of the same size pays.
- Migrating mid year requires transferring year to date wage and tax figures for every employee in every jurisdiction, so in practice companies switch only at a calendar year end, which leaves you locked to the incumbent for the rest of the year whatever the service is like.
- The service model depends on an assigned representative, and reported experience varies sharply with who that person is and how often the assignment changes, which means the quality of what you bought is not a property of the product you evaluated.
- It is a United States service, so a company with employees abroad still needs a separate payroll provider in each country, and the group has no single view of employment cost without building one outside the system.
Pricing, plan by plan
Carta
$29/month- LaunchFree
- Cap table
- Stakeholder management
- Seed$360/year
- 409A valuations
- Option exercising
- Scenarios
Paychex
$29/month- Flex Essentials$39/month
- Payroll
- Tax administration
- Direct deposit
- Flex Select$59/month
- HR administration
- State unemployment insurance
- New hire reporting
Which should you pick?
Choose Carta if
- You need cap table of record.
- You work on Web, Ios, Android.
- You also want 409a valuations.
Choose Paychex if
- You need payroll processing.
- You work on Web, Ios, Android.
- You also want payroll tax filing.
Questions people ask
- Is Carta or Paychex better?
- Neither clearly leads. Carta starts at $29/month and Paychex at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Carta or Paychex?
- Carta starts at $29/month and Paychex at $29/month.
- Does Carta or Paychex run on more platforms?
- Both run on Web, Ios, Android, so platform support will not decide this one for you.
- What is Carta best used for?
- Carta is most often used for a startup that has just closed a priced round and whose investors and counsel expect the cap table to live somewhere they can read it, a company issuing options to employees for the first time and needing a defensible 409a before it can set a strike price, a finance team preparing its first audit and needing asc 718 stock compensation schedules that tie to the grant records, a venture fund that wants lp reporting, capital calls and spv administration handled outside a spreadsheet. Of those, a startup that has just closed a priced round and whose investors and counsel expect the cap table to live somewhere they can read it and a company issuing options to employees for the first time and needing a defensible 409a before it can set a strike price are not what Paychex is typically brought in for.
- What can Carta do that Paychex cannot?
- Carta covers Cap table of record, 409A valuations, Electronic issuance, Vesting and exercise. Paychex covers Payroll processing, Payroll tax filing, Year end forms, Multi state payroll.
Answered from the vendors’ own pages
Carta: Do I need Carta before I have employees with options?
No. Before options exist a spreadsheet reviewed by your lawyer is usually enough. The pressure to move normally comes at a priced round, or the first time you need a 409A to set a strike price.
Paychex: How much does it cost?
Paychex quotes per client rather than publishing rates, and the structure typically includes a base fee plus a per employee per payroll charge with extras for year end and off cycle runs. Get the full fee schedule in writing, including what a mid year change of plan costs.
Carta: Is the 409A included in the subscription?
The subscription tiers bundle valuations differently and refreshes after material events can carry additional cost. Check what triggers a chargeable revaluation before you sign, because raising a round is exactly the moment you will need one.
Paychex: Who is liable if payroll taxes are filed late or wrongly?
Contractually the provider generally accepts responsibility for errors it makes, but the employer remains the party the tax authorities pursue. Read the specific indemnity language rather than relying on the sales description.
Carta: Can my accountant get the stock compensation numbers out of it?
Yes, it produces ASC 718 expense schedules and exports. If your accounts are prepared under a different framework, expect the schedules to be a starting point that your accountant reworks rather than something they post directly.
Paychex: Can I switch providers mid year?
Technically yes, but you must carry year to date figures across for every employee and jurisdiction, and errors there surface at year end on employee tax forms. Most businesses switch effective 1 January for that reason.
Carta: Is it useful for a company outside the United States?
It can hold the share register and grants, and it does support some non United States structures. The 409A and United States tax workflow will not apply to you, so weigh it against local alternatives that understand your filings.
Paychex: What is the difference between the standard service and the professional employer organisation option?
Under the professional employer organisation arrangement Paychex becomes a co-employer for tax and benefits purposes, which changes your benefits access and some of your employment administration. It costs more and it is harder to unwind, so treat it as a different decision from buying payroll.
Carta: How hard is it to leave?
Harder than the export button suggests. You can export the data, but the receiving system has to reproduce every historical grant, cancellation and transfer, and someone has to verify the result against the original signed consents.
Paychex: Does it work with my accounting software?
It exports a general ledger file and connects to the mainstream accounting products. Confirm the mapping to your chart of accounts during onboarding, because a generic export means your bookkeeper recodes every run.
Carta: Who normally pays for it, the company or the investors?
The company, even though investors and counsel are frequent users. That is the usual complaint about the pricing model: the party paying is not the only party benefiting.
Paychex: Is it suitable if we only have a few employees?
It will serve you, but very small employers often find the per run charges and the service tiering expensive relative to self service payroll products. The case improves once multi state complexity or benefits administration enters the picture.
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