USD ·Showing prices in USD for the US.
Built for small businesses in the US
Invoices, stock, accounting, payroll and your team in one simple product, set up for sales tax in the US. Bill once; everything updates.
Illustration of the SimpleERP dashboard for Harbor Supply Co.: sales $20,938, net profit $4,691, $2,441 to collect, a sales versus purchases chart and top products.
How it works
Save an invoice and SimpleERP does the rest in the same step. There is no second entry and no month-end catch-up.
Invoice INV-2026-0213 with numbered marks, and the five things posting it changed: stock, the receivable, output sales tax, cost of goods sold and the dashboard.
One system
Thirteen modules on one set of customers, suppliers, products and one ledger. Open the ones you need; the rest stay out of the way.
Tax invoices with sales tax worked out on every line, your EIN on the print and the amount in words.
Stock on hand by warehouse at weighted average cost, with a movement ledger and a low-stock list.
A double-entry ledger the database keeps balanced, with trial balance, P&L, balance sheet and a lock date.
Salary structures, monthly runs and payslips with your own earnings and deductions, posted to the books.
Bills of materials with scrap and cost roll-up, and work orders from plan to start to complete.
Industries
The same system, set up around the jobs your business does every day.
If you buy, sell, stock or pay people, SimpleERP probably fits. Tell us how you work.
Talk to usEvery day
Four jobs every small business repeats. Each one takes fewer steps and leaves the books right.
Invoicing
Pick the customer, type the item, press Enter. Tax and totals fill in as you go, with sales tax at the rate on each product.
Illustration of the keyboard-first invoice editor with a focused line, live tax totals and shortcut hints.
Inventory
Every invoice, bill, credit note, transfer and work order writes a stock movement, so on-hand quantities and values are never typed by hand.
Illustration of stock on hand by warehouse at average cost, with a low-stock row highlighted and a movement ledger.
Accounting
Every document posts its own journal. The database refuses an unbalanced entry, posted documents are frozen, and the lock date closes a month; reopening it needs approval and is logged.
Illustration of a profit and loss statement for Jan–Jun 2026 with net profit of $4,691, a sales tax summary and the lock date.
HR & payroll
Attendance and leave feed paid days. Payroll builds each payslip from the salary structure, then posts salary expense and payables when you approve.
Illustration of a payslip with Salary, Bonus and net pay of $3,833.
Illustration of the daily attendance sheet on a phone with a Mark all present button.
Simple by default
A one-location business never sees branches, warehouses or the chart of accounts until it looks for them.
The screens a new business needs this week.
It shows up when the business grows into it.
The foundations stay the same as you grow.
Pricing
Try every module for 7 days with no card. After that, Premium costs the same for every business: you pay for the people who sign in.
Premium
$50
per user per month
After a free week with everything. No card.
Correct by construction
No logos, no star ratings. These are the rules the product enforces, and what it looks like when it says no.
The database refuses any entry where debits and credits differ.
Cancellations write a reversal, so history is never rewritten.
Full audit history on documents and masters.
Each business can only ever read its own rows.
Every screen is built and tested at phone width.
Invoices, vouchers, payslips and reports on white paper.
Illustration of a journal entry where debits and credits differ by $10, refused, and a posting into a locked month, refused with the lock date.
Getting started
Setup seeds the accounts, sales tax rates, units, roles and numbering, so the first invoice is minutes away.
Sign up
Your name, your email and a password. No card is needed.
Tell us about the business
Business name, state and your EIN if you have one, on one screen.
Post your first invoice
Add a customer and a product, then bill. Your first invoice can be out within 10 minutes.
Illustration of the one-screen setup: business, sales tax and money, and team, with accounts, sales tax rates, units, roles and numbering seeded.
Bring your data
Customers, suppliers, products with opening stock, account balances and unpaid bills come across from the software you use today. Old vouchers stay in the old system as your archive.
Illustration of the import check for customers from a spreadsheet: 398 to create, 14 to update, 6 to skip and 2 errors, each error a sentence saying what to fix, and an Import 412 rows button.
Export customers, suppliers, items, accounts and unpaid invoices to CSV or Excel, then upload them and check the column matches.
Import their exportsUpload the CSV exports of contacts, items, accounts and open invoices.
Import from Zoho BooksFill our templates or upload your own sheets; columns match themselves.
Import from ExcelEvery import is checked first and can be undone.
FAQ
The questions owners ask before they sign up.
Yes, for 7 days. Sign up with your name, email and a password; no card is needed, and every module is included. After the trial, Premium is $50 per user per month, activated when you request it from Settings › Plan & billing (or contact us) with the number of users; we confirm by email within one working day. See pricing.
Both. SimpleERP keeps a complete double-entry ledger, so it does what accounting software does. Sales, purchase, inventory, CRM, HR, payroll, manufacturing, expenses and assets run on the same records, which is what makes it an ERP.
SimpleERP sets up sales tax for the US when you create the business: your state's sales tax rate, asked for during setup, your EIN on invoices, and a tax summary by rate for whoever files your returns. It does not file returns.
Yes. Invite your accountant by email with the Accountant role. They get journals, bank and cash registers, the trial balance, P&L, balance sheet, tax summary and the lock date, and can export any report to CSV.
Yes. SimpleERP is a web app and every screen works on a 360 px phone. Attendance, leave, expense claims and recording payments are designed to be done from a phone. There is no separate app to install.
Yes. Premium is $50 per user per month, counted on the people who sign in. Seven ready-made roles (Owner, Admin, Accountant, Sales, Purchase & Inventory, HR Manager, Employee self-service) cover most teams, and you can build custom roles from any of them. Pending invitations are not charged.
Yes. Settings → Import data reads Zoho Books exports and spreadsheets, including the lists QuickBooks and Xero export, and brings in accounts, customers, suppliers, products with opening stock, opening balances, unpaid invoices and bills, and employees. Every file is checked before anything is written, and an import can be undone. See how to move your data.
Not yet. SimpleERP does not connect to government e-invoicing or filing systems today. Your invoices carry your EIN, the sales tax on each line and the totals by rate, and the reports export to CSV for whoever files your returns.
7 days free. No card. Your first invoice in minutes.
