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AtlasOS: payroll bureau software alongside your payroll apps

AtlasOS is payroll bureau software for South African payroll bureaux and the accounting practices that run payroll for clients. Your payroll apps calculate pay; AtlasOS schedules every client's payroll run, tracks PAYE, UIF and SDL deadlines and statutory submissions, and keeps billing and client queries in one record. Arke Technologies builds it in Johannesburg.

Book an AtlasOS demoVisit the AtlasOS site  (opens atlaspractice.app)

What payroll is, and what a payroll bureau does

Payroll is the process of paying employees correctly and on time: working out gross pay, deducting PAYE and the employee's 1% UIF contribution, adding the employer's matching 1% UIF and, once annual payroll exceeds R500,000, the 1% SDL, then paying net salaries, issuing payslips and reporting it all to SARS and the Department of Employment and Labour. Every employer with staff runs payroll, in-house or through a payroll bureau.

The plain meaning of payroll bureau is a firm that processes payroll for other employers: it collects each client's inputs, runs the payroll, issues payslips and files the statutory returns, while the employer stays legally responsible for the tax it withholds. Many accounting practices offer payroll bureau services alongside bookkeeping and tax, so payroll for accountants software has to serve both.

Two colleagues work through documents at a shared desk in a busy practice.

Payroll apps, payroll software and bureau software compared

"Payroll apps" can mean three quite different things. Here is how they differ from payroll bureau software, and where AtlasOS sits.

TypeWhat it doesSuitsWhere AtlasOS fits
Cloud payroll appsCalculate pay, deductions and payslips for each employer, in a browser or on a phoneEmployers running their own payrollYour bureau may run clients on these; AtlasOS tracks the work around each run
Installed payroll softwareThe same calculations on a server or desktop, often with deeper reportingLarger employers and established bureauxAs above
Employee self-service appsPayslips, leave and tax certificates for staff on their phonesEmployers with large or dispersed workforcesOutside AtlasOS
Payroll bureau softwareRuns the bureau: clients, payroll-run schedules, statutory deadlines, submissions and billingPayroll bureaux and accounting practices that offer payrollAtlasOS's role

A bureau needs two layers: a payroll engine that calculates pay, and a control layer that schedules every client's run and submission and tracks each one to its deadline. Payroll apps do the first; AtlasOS does the second. It is the payroll configuration of AtlasOS, our practice management platform for professional services firms; visit the AtlasOS site  (opens atlaspractice.app) for product detail.

An accountant in a suit checks figures on a calculator beside his laptop.

The statutory calendar a payroll bureau carries

For each client employer, a South African bureau works to a fixed rhythm:

  • Every pay period

    process the payroll run and issue payslips.

  • Monthly, by the 7th

    submit the EMP201 declaration and pay PAYE, UIF and SDL to SARS (on the last business day before the 7th when it falls on a weekend or public holiday).

  • Monthly

    submit UIF declarations to the Department of Employment and Labour.

  • Twice a year

    submit the EMP501 reconciliation, an interim one for March to August and an annual one after the tax year ends in February; with the annual reconciliation, issue IRP5 and IT3(a) tax certificates to employees.

Multiply that by every client on the books and the calendar becomes the business. AtlasOS turns it into scheduled tasks with owners, due dates, alerts and a status you can report on.

What AtlasOS does for a payroll bureau

  • Payroll-run scheduling

    Each client's payroll runs are scheduled against its pay cycle, with an owner and a due date.

  • PAYE, UIF and SDL deadlines

    Deadline management for every client's monthly declarations, with alerts before each due date.

  • Statutory submission tracking

    Each statutory submission carries a status, so you can show at any moment what has been filed and what is outstanding.

  • Multi-entity client records

    Companies, trusts and individuals, with CIPC and SARS data, so a group with several employing companies stays one relationship.

  • Oversight across the book

    A portfolio view shows the status of every client's runs and submissions, so a manager sees what is outstanding before a deadline passes.

  • Billing

    Fixed-fee, retainer or time-based billing, multi-entity invoicing and client statements.

  • Client inbox

    Client queries and task comments stay with the client's record.

  • AI-assisted advisory

    Ask which runs are overdue or which clients have submissions outstanding; your team makes the decisions.

  • Your bureau's brand

    Your logo, colours, email templates and PDF headers.

Control, not calculation

AtlasOS's role in a bureau is control rather than calculation: it schedules, assigns and tracks. Keep the payroll software you trust for pay calculation, payslips and return preparation; AtlasOS makes sure each run and each submission is scheduled, owned and tracked to its deadline.

Where a bureau wants its payroll engine, banking or accounting systems connected, our systems integration team scopes that as a project, including SARS and CIPC integrations.

Two colleagues work through documents at a shared desk in a busy practice.

In production at Evolv Accountants

Evolv Accountants, the AtlasOS reference site, runs its UIF declarations and salary schedules on AtlasOS, alongside its compliance work, inbox and tasks. Read AtlasOS at Evolv Accountants.

Atlas OS gives us visibility across 89 entities that we simply did not have before. The compliance tracking alone has saved us significant time every month.

Evolv AccountantsAtlasOS client, South Africa

Payroll bureau costs, and what drives them

For the employers who use one, payroll bureau costs usually follow the work: a fee per payslip or per employee, a monthly retainer or a fixed fee per run, with year-end reconciliations, new starters and terminations sometimes charged separately. AtlasOS billing supports fixed-fee, retainer and time-based models, with multi-entity invoicing and client statements.

Across the market, what drives the cost of bureau software is scope: how many people use it, how much of the bureau it runs, and the configuration, data migration and training needed to go live. We do not publish AtlasOS pricing on this site; we price after a demo, once we understand your bureau.

Choosing payroll service bureau software

Payroll service bureau software reviews help, but test any shortlist against your own calendar:

  • Does it schedule every client's runs and track PAYE, UIF and SDL deadlines and submissions?
  • Can a manager see the whole book's status at once?
  • How is each firm's data isolated, and where is it hosted?
  • Can you speak to a firm that runs it in production? Ours is Evolv Accountants.
  • What does migration involve, and how would you leave?

Moving your bureau onto AtlasOS

  1. Demo

    We show AtlasOS on scenarios from your bureau before we propose anything.

  2. Discovery and configuration

    We map your clients, pay cycles, deadlines, team and billing, then set up roles and your branding.

  3. Data migration

    Client and entity records and open work, reconciled against your source; see data migration.

  4. Training and go-live

    Training for each role, with go-live timed away from month-end runs, the EMP201 deadline on the 7th and EMP501 reconciliation periods.

  5. Support

    Ongoing support from the team that builds AtlasOS.

Payroll data, governance, POPIA and procurement

Payroll holds some of the most sensitive personal information an employer keeps: identity numbers, tax numbers, bank details and salaries.

  • Governance and reporting. Managers report each client's run and submission status from one view. Support incidents are prioritised on our P1 to P4 scale, with response and resolution targets agreed in your AtlasOS agreement. AI assistance supports your team's decisions without replacing their judgement.
  • Isolation. AtlasOS runs on Google Cloud, with PostgreSQL on Google Cloud SQL, sign-in through Firebase Authentication and each firm's data separated at the database level.- POPIA. Your clients, as employers, are the responsible parties for their employees' personal information, and your bureau processes it on their behalf; we never train AI models on client data without explicit consent. See also POPIA compliance.
  • Continuity and support. Your bureau's data and documentation are yours, and so is the decision to leave. Existing clients reach the team that builds AtlasOS at support@arketechnologies.com.
  • Procurement. Arke Technologies (Pty) Ltd is a Level 1 B-BBEE contributor (sworn affidavit available on request), giving buyers 135% procurement recognition; company documents, our CSD supplier number and SARS tax compliance status are available on request. The route is a demo, a written proposal, then an agreement and your purchase order.

Related platforms and guides

Book an AtlasOS demo

See how AtlasOS handles client and entity management, SARS and CIPC compliance workflows, billing and client communications for a firm like yours. Product detail is on the AtlasOS site  (opens atlaspractice.app).

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Frequently asked questions

What is payroll? Show answer

Payroll is the process of paying employees correctly and on time: calculating gross pay, deducting PAYE and the employee's UIF contribution, adding the employer's UIF and, once annual payroll exceeds R500,000, SDL, then paying net salaries and issuing payslips. In South Africa it also means monthly EMP201 declarations to SARS, UIF declarations to the Department of Employment and Labour, and EMP501 reconciliations twice a year.

What is a payroll bureau? Show answer

A payroll bureau is a firm that runs payroll for other employers. It collects each client's inputs, such as new starters, overtime and leave, processes the payroll, issues payslips and files the statutory returns with SARS and the Department of Employment and Labour. Many accounting practices offer payroll bureau services alongside bookkeeping and tax work.

Are payroll apps enough to run a payroll bureau? Show answer

Not on their own. Payroll apps calculate pay for each employer, but a bureau must also control the whole book: which client's run is due, which PAYE, UIF and SDL submissions are outstanding and who is responsible for each. That is the job of payroll bureau software, and AtlasOS does it alongside the payroll apps or software you already use.

Does AtlasOS calculate payroll? Show answer

No. AtlasOS runs the bureau rather than the pay calculation. It schedules each client's payroll runs, manages PAYE, UIF and SDL deadlines, tracks statutory submissions, and handles billing and client queries. Keep your payroll software for calculations, payslips and return preparation; AtlasOS tracks every run and submission to its deadline and shows the status across all your clients.

How much does a payroll bureau cost? Show answer

Payroll bureau costs depend on employee numbers, pay frequency and the services included. Bureaux commonly charge per payslip, per employee or a fixed monthly fee, and may bill year-end reconciliations separately. For bureaux themselves, AtlasOS supports fixed-fee, retainer and time-based billing; we do not publish AtlasOS pricing, and we price after a demo.

Is payroll data safe in AtlasOS? Show answer

AtlasOS protects payroll data by isolating each firm's data at the database level, on Google Cloud with PostgreSQL on Google Cloud SQL and sign-in through Firebase Authentication. Payroll records hold identity numbers, bank details and salaries, so POPIA applies in full; we never train AI models on client data without explicit consent.

See AtlasOS run your payroll calendar

Book a demo to see AtlasOS run a payroll calendar like yours. Email info@arketechnologies.com or call 010 447 2445.

Book an AtlasOS demoVisit the AtlasOS site  (opens atlaspractice.app)