From PO to payment
Control Purchases & Expenses in One Place
Composity Purchasing connects purchase orders, vendor bills, and deliveries in one cloud system for SMBs. Integrates with ERP, Inventory and Accounting.
Who Composity Purchasing is for
Operations, warehouse, and finance teams that need one trail from purchase order to receipt, vendor bill, and payment — without spreadsheets.
By industry
By role
Procurement
Finance team
Warehouse
Business owners
All the features you need
Procurement that scales with every location.
Explore purchases, expenses, and payments in Composity — operational control without a separate buying tool.
Explore purchasing
Create purchase orders and vendor documents directly from Composity — then follow them through receipt and payment.
Vendor profiles
Keep company ID, VAT number, addresses, and responsible persons on the supplier record. Open the full account from any expense without switching tools.
Line items from inventory
Pick existing products or add new ones on the fly. Import multiple lines so large deliveries do not need one-by-one entry.
Locations & Incoterms
Tag each document with warehouse or branch, delivery method, and Incoterms so international shipments have a clear cost and risk split.
Sequential numbering
Define numbering with prefixes and ranges per location so purchase documents stay unique and audit-ready.
Capture every cost — materials, services, rent, salaries, and extra charges — then allocate them to the items, projects, or departments that consumed them.
Expense categories
Group spend into categories you define, so reporting stays consistent across teams and periods.
Distributable costs
Spread transport, duty, and eco-tax across lines by quantity, amount, weight, or volume. Mark external costs so they enter the duty calculation.
Project & department split
Distribute an expense across departments, projects, or accounts for budgets, billing, and profitability analysis.
Reversals
Reverse an expense in one action. Composity creates a mirrored document with opposite quantities so corrections stay traceable.
Pay suppliers with a full picture of due dates, methods, and ledger impact — then see spend trends as they happen.
Payment tracking
Add and edit payments on the expense profile. Record method, amount, and date so open balances stay current.
Due dates & methods
Set due dates and payment methods on each bill so cash planning is not a separate spreadsheet.
PDF templates & files
Download branded expense PDFs and keep supplier invoices, contracts, and receipts attached to the same document.
Ledger posting
Every finalized expense writes to the general ledger, so purchasing and accounting share one set of numbers.
How Composity Purchasing organizes POs, vendor bills & deliveries
Modern, Easy to use and Cloud based
Professional procurement
Smart, connected & auditable purchasing
Run buying from order to stock
Replace email approvals and disconnected tools with one path: request, order, receipt, vendor bill, and payment — posted to inventory and the ledger.
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Buy with a trail
Every purchase order, expense, and receipt stays linked. You always know who ordered, what arrived, and what still needs to be paid.
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Receive into stock
Issue inventory receipts from the expense so warehouse quantities and unit costs match the supplier document — including converted currencies.
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Pay what you owe
Due dates and open balances sit on the same document as the bill. Record payments as they leave the bank and keep cash flow honest.
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Costs land correctly
Duty, freight, and eco-tax do not sit in a side sheet. They distribute onto items and post with the expense so margins stay real.
Highlighted
Features
Purchasing software with inventory, accounting and ERP in one system
Procurement features to order, receive, cost, and pay — without a second system for expenses.
Create purchase orders with items, quantities, prices, discounts, and delivery terms. Move from order to receipt and vendor bill without rebuilding the lines.
See billing data, VAT IDs, open expenses, payments, and documents for each supplier — and add a new vendor from the expense form when they are not in the list yet.
Record rent, utilities, salaries, and material purchases in the same module, with categories that keep reporting consistent.
Distribute extra costs across items by quantity, amount, weight, or volume. Include external costs in duty, and calculate eco-tax from net weight and packaging materials.
Check Issue Receipt when you finalize an expense and Composity creates the warehouse receipt. Edits stay on the expense so quantities and values never drift apart.
Enter supplier prices in a foreign currency. Converted amounts flow into the inventory receipt and the ledger in your working currency.
Tag expenses to a project or contact, then distribute amounts across departments, projects, or accounts for budgets and job costing.
Customize expense templates, download professional PDFs, and store supplier invoices, contracts, and receipts on the expense profile.
Move purchase documents through stages that match your process — from draft to approved, received, and paid — with contact fields for follow-up.
Finalized expenses write to the general ledger so finance does not re-key vendor bills. Reverse an expense and the correction stays on the same trail.
Enjoy peace of mind with automatic cloud backups, encrypted storage, and industry-standard data protection practices.
Purchasing software reviews from retail, wholesale and services
Teams use Composity Purchasing to order from suppliers, receive stock, and keep expenses aligned with accounting.
Sarah T.
Operations Manager
“Purchase orders, receipts, and vendor bills finally live together in this purchasing software. Warehouse and finance stop arguing about what actually arrived.”
Daniel P.
Accountant
“Landed costs used to sit in Excel. This purchasing software posts duty and freight to item cost and the ledger in the same step.”
Liam S.
Warehouse Lead
“Issuing the inventory receipt from the expense means stock and the supplier bill always match. No more double entry.”
Maria R.
Procurement
“I can see open bills, due dates, and what we already paid without chasing three inboxes.”
Sandra L.
Business Owner
“Rent, utilities, and supplier invoices are in one list. I finally know where the money goes each month.”
Maya Nakamura
Studio Owner
“Project costing on expenses means we can bill clients with real purchase costs, not estimates from memory.”
20,000+ clients already trust us · Purchases that post to stock and the ledger
What our customers love most:
- Top support
- Easy & Convenient
- Secure & Reliable
Frequently Asked Questions
Composity purchasing and expenses lets you create purchase orders, record vendor bills, receive stock, allocate extra costs, and track supplier payments — with ledger posting built in.
Yes. Use the same module for material purchases and recurring costs such as rent, utilities, and salaries, with categories for reporting.
Yes. When you finalize an expense and issue a receipt, Composity creates an inventory receipt. Quantities and converted prices stay tied to the expense document.
Yes. Distribute extra costs across items by quantity, amount, weight, or volume. External costs can enter the duty calculation, and eco-tax can use net weight and packaging.
Yes. Apply tax on expenses and enter prices in a currency other than your working currency. Converted amounts flow into receipts and the ledger.
Yes. Tag an expense to a project and distribute amounts across departments, projects, or accounts for job costing and budgets.
Record payments on the expense profile with method and due date. Open balances stay visible so you know what is still owed.
Yes. Reverse from the expense list and Composity generates a document with opposite quantities. You can adjust it before saving.
Yes. Your data is encrypted, backed up regularly, and stored with industry-standard security practices.
Yes. It works with Composity Inventory, ERP, Invoicing, and Finance & Accounting so purchases, stock, and the ledger stay in one system.
Composity Go is mini ERP for micro and small teams from €7/month. Business OS is the full ERP for mid-size and enterprise teams from €50/month, with accounting, inventory, POS, and manufacturing. See all plans.
Composity Go can go live in 1–5 hours. Business OS typically takes 3–10 days. See how implementation works.
Its Free to Try
Ready to Take Control of Purchasing?
Join thousands of businesses that run orders, receipts, and supplier payments in Composity. Start with a clearer view of spend today.