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Operational Accounting Systems Limited

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Operational Accounting Systems Limited

Change the way you view your business with Operational Accounting Systems Limited (o-a-sys). Special

Operational Accounting Systems Limited (o-a-sys) specialise in helping small and medium sized businesses improve the efficiency of their processes. By selecting o-a-sys you can choose business software tailored to your business and its needs. With our award winning software portfolio and specialist skills, we are able to deliver software solutions to a diverse range of industries, focusing on key areas of business such as Finance, Payroll & HR, Customer Relationship Management and Stock Control. o-a-sys understands that all business requirements are unique, and some businesses require something more specific. With our in-house software development capabilities, we can understand you business needs and tailor the software to meet your specific requirements.

21/10/2026

From subcontractor verification to CIS300!

CIS compliance starts before the first payment is made.

When engaging new subcontractors, contractors need to verify the subcontractor’s tax status with HMRC to confirm whether they should be paid gross or net of tax, and at what deduction rate.

Pegasus CIS 5 supports online subcontractor verification, storing details such as verification status, tax information and relevant subcontractor records. It also tracks subcontractor payments, material elements and tax deducted to support the CIS300 monthly return.

That means the process is not just about payment.

It is about creating a controlled CIS record from verification through to monthly return.

And that is far better than trying to rebuild the story at month-end.

Want to see how Pegasus CIS 5 manages subcontractor CIS processing? Contact o-a-sys, but first look at the Subcontractors Webinar with Demo : https://zurl.co/tVukC

20/10/2026

What does CIS subcontractor control involve?

Managing subcontractors under CIS is not just about paying an invoice.

You need to manage:
~ Subcontractor verification
~ Tax status
~ Labour and material split
~ Tax deductions
~ Payment certificates
~ Monthly CIS300 returns
~ Retentions
~ Reverse Charge VAT
~ Supporting documents and audit trails

Pegasus CIS 5 stores subcontractor CIS details, supports online verification, tracks payments and deductions, and helps produce the CIS300 monthly return.

That gives construction businesses a more structured way to meet CIS obligations and manage subcontractor payments.

Less manual chasing.

More controlled processing.

Ask o-a-sys how Pegasus CIS 5 supports CIS subcontractor control.

Datasheet: https://zurl.co/aAsbL

“The moving parts of CIS compliance.”

19/10/2026

CIS compliance without the spreadsheet headache - Pegasus CIS 5 supports subcontractor verification, CIS300 monthly returns, subcontractor payment certificates, labour/material split, Reverse Charge VAT, self-billing, authenticated VAT receipts and HMRC CIS compliance.

Is CIS compliance for subcontractors processing taking more time than it should?

CIS compliance is one of those areas where “nearly right” is not a comforting phrase.

Subcontractor verification.
Tax status.
Material deductions.
Payment certificates.
Monthly returns.
Reverse Charge VAT.
Records that need to be right.

For construction businesses, this can become a time-consuming process if the information is spread across spreadsheets, emails and manual checks.

Pegasus CIS 5 supports online subcontractor verification, CIS300 monthly return processing, subcontractor payment certificates and Construction Industry Scheme compliance.

Because CIS compliance should be controlled, not cobbled together.

Want a better way to manage CIS subcontractor compliance? Speak to o-a-sys about Pegasus CIS 5.

Datasheet Subcontractors: https://zurl.co/I9KD3
Datasheet Reverse VAT Charge: https://zurl.co/rGmrb

“CIS compliance should not rely on crossed fingers.”

16/10/2026

See email automation in Pegasus CIS 5

If your team spends too much time manually generating, attaching and sending routine construction finance documents, Pegasus CIS 5 email automation could help.

Pegasus CIS 5 supports automatic emailing for documents such as sales invoices, contract certificates, subcontractor self-bill invoices, subcontractor orders and remote timesheets. With templates and enhanced email controls, your business can improve consistency while reducing repetitive admin.

We can show you how this works in a short practical walkthrough. No jargon. No inbox therapy session.

Just better document communication from your construction system.

Book a Pegasus CIS 5 email automation walkthrough with o-a-sys.

Webinar demo: https://zurl.co/04asS

15/10/2026

The attachment dance

You know the attachment dance.

Open the invoice.
Export the PDF.
Start the email.
Find the customer address.
Attach the PDF.
Check the PDF.
Check the recipient.
Check the subject.
Send it.
Immediately wonder if you attached the right one.

Repeat until Friday.

Pegasus CIS 5 helps reduce repetitive emailing by supporting automatic emailing and email templates for routine documents.

It will not make your tea. But it can help reduce the “did I attach that?” moment. Which, frankly, is nearly as valuable.

If your team is doing the attachment dance too often, speak to o-a-sys about Pegasus CIS 5.

Brochure: https://zurl.co/fTN2G

“Stop doing the attachment dance.”

14/10/2026

Templates make routine communication easier

Routine emails should not need to be written from scratch every time.

If the message is predictable, the document is predictable and the recipient rules are predictable, templates can save time and improve consistency.

Pegasus CIS 5 includes email templates for system-generated documents, helping businesses standardise messages for areas such as sales invoices, contract certificates and subcontractor documents. CIS 5 also improves email functionality with HTML templates and HTML footers, allowing more polished email presentation where needed.

That means your documents can leave the system with a more consistent message and a more professional finish.

Less “I copied the last email and changed most of it”.

More controlled communication.

Want to see email templates in Pegasus CIS 5? Contact o-a-sys for a practical walkthrough.

Webinar Recording of CIS 5 launch: https://zurl.co/Py3l0

13/10/2026

What can Pegasus CIS 5 email automatically?

Pegasus CIS 5 includes automatic emailing across several areas of the system.

This includes functionality for documents such as:
* Sales invoices
* Sales credits
* Contract certificates
* Subcontractor self-bill invoices
* Subcontractor orders
* Remote timesheets

The system also includes email templates and document type settings, giving businesses control over how documents are emailed or printed. CIS 5 adds further email improvements, including HTML email templates, HTML footers and test message functionality.

The aim is simple:
~ Less repetitive admin.
~ More consistency.
~ Better document communication.

Ask o-a-sys for a Pegasus CIS 5 email automation overview.

Bruchure: https://zurl.co/xxrg9

“Documents Pegasus CIS 5 can help email.”

12/10/2026

Send the right documents, without the manual chase - Pegasus CIS 5 includes automatic emailing for sales invoices, contract certificates, subcontractor self-bill invoices, subcontractor orders and remote timesheets. Enhancements also include email templates, drafts, resend options, HTML templates, HTML email footers and test message functionality.

How many emails does your team send manually?

A question for construction finance teams: How many documents are manually emailed every week?

+ Invoices.
+ Certificates.
+ Statements.
+ Purchase orders.
+ Subcontractor documents.
+ Payment information.
+ Remote timesheets.

Now the second question: How many of those emails follow the same pattern every time?

Pegasus CIS 5 includes automatic emailing functionality and email templates, helping reduce the manual effort of sending routine documents from the system.

Because if the system already knows what the document is, who it belongs to and where it needs to go, your team should not have to do all the chasing by hand.

Want to reduce manual document emailing? Speak to o-a-sys about Pegasus CIS 5.

Brochure: https://zurl.co/qQJ6d

“Manual emailing is not a full-time job. Hopefully.”

09/10/2026

See Pegasus CIS 5 document management in action

If your team spends too much time finding invoices, purchase documents, subcontractor paperwork or job cost evidence, Pegasus CIS 5 document management is worth a closer look.

Pegasus CIS 5 helps users connect and access documents across relevant areas of the system, including purchase orders, stock, subcontractor orders and job cost transactions.

We can show you how document management works within the wider construction contract control process.

No filing cabinet nostalgia.

Just a practical look at finding the right document, in the right place, when it is needed.

Book a Pegasus CIS 5 document management walkthrough with o-a-sys.

https://zurl.co/8nuZz

08/10/2026

The document treasure hunt

A familiar office sport:

~Someone needs a document.
~First stop: the shared drive.
~Then Outlook.
~Then Teams.
~Then Downloads.
~Then someone’s desktop.
~Then the folder called “New Folder”.
~Then the folder inside that called “Use this one”.
~Then someone says, “I think Sarah had it.”
~Sarah is on leave.

This is why document management matters.

Pegasus CIS 5 helps link documents to the relevant areas of the system, reducing the need to search across disconnected locations.

Because construction finance has enough challenges without turning every missing invoice into an escape room.

If your documents keep going on little adventures, speak to o-a-sys about Pegasus CIS 5.

Datasheet: https://zurl.co/0fiCU
“Document treasure hunts are not productive.”

Address

46 The Cobalt Building, 1600 Eureka ParkLower Pemberton
Ashford
TN254BF

Opening Hours

Monday	9am - 5:30pm
Tuesday	9am - 5:30pm
Wednesday	9am - 5:30pm
Thursday	9am - 5:30pm
Friday	9am - 5:30pm

Website

http://www.o-a-sys.co.uk/

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