Non-Modular ERP Accounting Software. One Unified System.

All Financial, Inventory, and Operational Data in a Single File — No Modules, No Add-Ons.

Plus & Minus Accounting Software is a non-modular ERP accounting software that runs in a single file, combining GL, AP, AR, payroll, inventory, job costing, supply chain, and reporting in one fully integrated system.

Plus & Minus delivers a full ERP accounting system without modules, including General Ledger, Accounts Payable, Accounts Receivable, Payroll, Inventory Management, Project Costing, Supply Chain Management (SCM), One-Step Consolidations, Business Intelligence, and KPI Dashboards — all operating from a single, unified data file.

Quick Facts

Category: Non-Modular ERP Accounting Software
Architecture: Single-file data model (no modules or add-ons)
Core Functions Included: General Ledger, AP, AR, Payroll, Inventory, Job Costing, Supply Chain, Reporting
Deployment Options: On-premise or web-based
Best For: Growing, multi-entity businesses needing unified finance and operations

Common Use Cases

Multi-entity and multi-company accounting with one-step consolidations
Inventory and supply chain posting directly to the general ledger
Project and job costing tied to real-time financial data
Replacing modular ERP systems with a unified architecture
CFO reporting and KPI dashboards from one consistent data source
Businesses outgrowing QuickBooks or modular accounting systems

Also referred to as: unified ERP accounting system, single-database ERP, all-in-one ERP accounting software, ERP accounting without modules, non-modular ERP.

What Makes Plus & Minus Different

Plus & Minus is non-modular ERP accounting software designed to keep financial and operational data aligned in a single, unified system.
Non-modular ERP architecture — no separate systems to integrate; a full ERP accounting system without modules.
Single-file data model — financial and operational data always in sync
Every accounting function included — no add-on pricing or hidden complexity
Designed for growing, multi-entity businesses that need control without overhead
All financial, inventory, and operational data in one place — because Plus & Minus operates from a single-file data model, transactions across accounting, inventory, projects, and supply chain are always in sync, eliminating reconciliation delays and data mismatches common in modular systems.

As Featured In CFO Tech Outlook
Recognized for delivering a unified, non-modular ERP accounting system that keeps all financial and operational data in a single file.

Read why we were featured →

Why CFOs Care

No modules to integrate or reconcile
One data source for finance and operations
ERP-level control without ERP complexity

See Why CFOs Choose a Single-File ERP →

Company Snapshot

25+ years of continuous development
Veteran-Owned Business
Used by multi-entity organizations

Request a Demo →

On-premise or Web-based Deployment

Learn why our unique design helps businesses improve efficiency

40 years of consistent and proven improvements

Veteran-Owned Business

EXPLORE

The elegant simplicity of Plus & Minus is that a single database is required for each transaction type instead of a database for each module

Transaction Type	Values
Financial	Currency
Inventory	Units
Labor	Hours

As a result of this innovative simplification, the rigorous design discipline of Plus & Minus Accounting Software has remained unchanged for 25+ years.

That was the genesis of Plus & Minus. NO MODULES! No intermittent swapping of data from one module to another.

Use what you need, when you need it. All functions are available all the time. No monthly plans, no subscriptions, and no annual license fees.

Top Reasons Plus & Minus Accounting Software Saves Your Business Time & Money

Revolutionize your everyday business operations with the efficiency and ease provided by reliable accounting software

It doesn’t break. Day/History database design eliminates “record contention.”

PDF retrieval system. All financial data and documents are kept private and protected.

Effortlessly handles your employee and sales growth.

Modular systems “window” you into oblivion. Plus & Minus doesn’t since the same window is used for Sales, Purchase, and Work-in-Process.

No delays. Complete financial reporting runs on all data and eliminates manual reporting.

1 File format accounting software makes setup a matter of hours and not months.

Ability to manage the finances of all businesses separately and then flow that revenue into a single ledger of the parent company.

Ledger

Optimize your accounting procedures and make informed business decisions with our reliable general ledger that provides accurate financial records and insights.

Accounts Receivable

Effortlessly manage your billing and collections processes, maintain positive customer relationships, and achieve financial success.

Inventory

Enhance your inventory management with our system designed using Gordon Graham’s “Distribution Inventory Management”, which provides real-time visibility, streamlines your supply chain, and helps drive business growth and profitability.

OTHER FEATURES

Discover the power of Plus & Minus Accounting Software and its comprehensive features, which help automate tasks, analyze financial data, and enables your business to thrive.

Frequently Asked Questions

Is Plus & Minus an ERP or accounting software?
Plus & Minus is non-modular ERP accounting software that unifies financial and operational functions in a single system.

What does “non-modular ERP” mean?
It means ERP functions are not sold or implemented as separate modules. All features operate together from a single-file data model.

Why does a single-file data model matter?
It keeps accounting, inventory, projects, and supply chain data synchronized, reducing reconciliation delays and data mismatches.

Does Plus & Minus include inventory and supply chain management?
Yes. Inventory and supply chain functions are fully integrated with accounting in the same system.

Can Plus & Minus support multi-entity businesses?
Yes. It is designed for growing, multi-entity organizations and supports one-step consolidations.

How do I get started with Plus & Minus?
You can request a demo to see how the system works in your environment.

Plus & Minus is this planet's most comprehensive, powerful, and cost-efficient accounting software

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Testimonials

As a consultant to Plus & Minus, I was able to understand the power, simplicity, dependability and beauty of Plus & Minus with its one single-format database structure.

My other clients use modular systems with primary, secondary and tertiary relational databases: a real money maker for me.

Dave

IT Consultant

Early in my career I once worked for a company using Plus & Minus that was purchased by a global company. I ended up traveling around the world installing various ERP and accounting software systems for industry-leading companies. Over time, I realized the power in Plus & Minus compared to these behemoth business systems. The one format design forces a discipline making it simple, powerful, and reliable: a standard the more expensive software products cannot achieve with their multi-format designs. The common thread that held all these large software systems was their complexity, lack of reliability, and the big-ticket expense we had to pay just to get things to work correctly for the customer. With Plus & Minus, you have power in the simplicity of this software and I continue to be astonished at its affordability. It just works!

Felicia C.

Accountant

As a former CFO of a Fortune 500 company with over 1100 employees in Accounting, I wish I had discovered this software sooner due to its simplicity and versatility. It handles inter-company transactions with a click and produces consolidating financial statements in seconds. The one format makes importing as simple as 1-2-3.

Richard M.

CFO

The system is built to control and monitor entries. It has the capability of doing payrolls, inventory, billings, etc as part of one purchase software system. No need to buy or install separate modules. One of the aspects I appreciate is data is secured and you never close a year but open new years, and the detail entries remain as long you want or need to be kept. I have used the software for many years, and I have had to reconstruct prior years and was able to because the entries were still visible. Another aspect of the software I appreciate is that when you need to make a correction, the system requires you to do a correcting entry in lieu of changing an original entry.

James K.

Controller

Other software that I used is like a sinking ship. I have been in the accounting field for more than forty years, and I’ve had the opportunity to work with not only Plus & Minus, but also SAP, MAPICS, and QuickBooks throughout my career. Plus & Minus has been, by far, the easiest software to use because of its ability to do multiple transactions in the same window, making the transition from sales, purchasing, and work-in-process seamless. Their single file makes data entry quick and effortless and allows for infinite reporting versatility.

Dorothy B.

Accountant

I have used Plus & Minus for many years. Easy to learn. For a construction company, like ours- it gives me all the job cost and financial info I need. I have used many different accounting software in the 32 years I have been at this company and I see no reason to ever change. Last year we tried going on the QuickBooks—-no comparison. We continued on using Plus & Minus. I cannot give you anything negative about this software. The support team for this software is amazing.