A guide to accounting for manufacturing

Published Friday 15 May 2026

Table of contents

• What is manufacturing accounting?
• Why manufacturing accounting is different
• Understanding manufacturing costs
• Calculating cost of goods manufactured (COGM) and cost of goods sold (COGS)
• Choose the right costing methods
• Manage inventory and work-in-progress
• Essential accounting processes for manufacturers
• Financial reporting and compliance
• Common manufacturing accounting challenges and how to avoid them
• Choose accounting software for manufacturing
• Simplify your manufacturing accounting with Xero
• FAQs on manufacturing accounting

Key takeaways

• Choose the right costing method based on your production type: use job order costing for custom or batch work, process costing for continuous production of identical items, and absorption costing to meet UK compliance requirements under FRS 102.
• Track inventory at three distinct stages, raw materials, work-in-progress, and finished goods, to get accurate financial statements and understand your true production costs.
• Learn how to calculate cost of goods manufactured (COGM) and cost of goods sold (COGS) so you can set profitable prices, measure margins, and make informed decisions about which products to prioritise.
• Implement cloud-based accounting software designed for manufacturing that can handle multiple inventory stages, allocate overhead costs, and integrate with your other business tools.

What is manufacturing accounting?

Manufacturing accounting is a specialised branch of accounting that tracks the costs involved in producing goods. It captures expenses across raw materials, labour, and overhead to calculate the true cost of each product you make.

Unlike retail businesses that buy and resell products, or service businesses that bill for time, manufacturers transform raw inputs into new products. This means you need to track costs at multiple stages: when materials arrive, while products are being made, and when finished goods are ready to sell.

The goal is to understand exactly what each product costs to produce. With accurate cost data, you can set profitable prices, identify inefficiencies, and make informed decisions about which products to prioritise. This matters when research from the ICAEW found that 50% of executive decisions are made on intuition alone.

Why manufacturing accounting is different

Standard accounting works well for businesses that buy and sell products or bill for time. Manufacturing accounting adds complexity because you're creating value through production, not simply reselling goods or charging hourly rates.

A retailer buys stock at a known price and sells it at a markup. A service business tracks billable hours against projects. But as a manufacturer, you combine multiple raw materials, apply labour, and absorb factory overhead to produce something entirely new. Tracking these layered costs accurately is what sets manufacturing accounting apart.

Key differences include:

• Multiple inventory stages: you track raw materials, work-in-progress (WIP), and finished goods separately.
• Cost allocation: you assign both direct and indirect costs to specific products.
• Work-in-progress tracking: you account for partially completed items at any point in time.
• Overhead distribution: you spread factory costs across products in a logical, consistent way.

These differences mean general accounting software and methods often fall short. Understanding what makes manufacturing accounting unique helps you choose the right approach for your business.

Understanding manufacturing costs

Before choosing a costing method, you need to understand the types of costs involved in manufacturing. Each plays a different role in calculating your product costs and affects how you report your finances.

Direct costs

Direct costs can be traced to a specific product you make.

• Direct materials: the raw materials and components that become part of your finished product. Official UK guidance states that production cost is the purchase price of materials plus costs directly attributable to production. For a furniture maker, this includes wood, screws, and fabric.
• Direct labour: wages paid to workers who physically make your products. This covers time spent on production, not administrative tasks.

Indirect costs and manufacturing overhead

Indirect costs support production but can't be traced to a single product.

• Manufacturing overhead: costs such as factory rent, equipment maintenance, utilities, and supervisor salaries. You allocate these overhead costs across products using a consistent method.
• Variable overhead: costs that change with production volume, for example, electricity for machinery or packaging materials.
• Fixed overhead: costs that stay the same regardless of how much you produce, such as factory rent, insurance, and equipment leases.

Product costs vs production costs

These two terms are often confused, but they refer to different things.

• Product costs: all costs tied to making a product, including direct materials, direct labour, and manufacturing overhead. These are capitalised as inventory on your balance sheet until the product is sold.
• Production costs: the broader set of costs to run your manufacturing operation, which can include product costs plus additional operating expenses such as administrative salaries and selling costs.

Depreciation

Manufacturing equipment loses value over time, and depreciation reflects this in your accounts. You'll need to choose a method that suits your assets and production patterns.

• Straight-line: spreads the cost evenly over the asset's useful life. Simple and predictable.
• Declining balance: applies a higher charge in earlier years when the asset is most productive.
• Sum-of-years' digits: similar to declining balance, but uses a fraction based on the asset's remaining life to weight the depreciation.

Other key cost terms

A few more terms you'll encounter regularly in manufacturing accounting.

• Cost of goods sold (COGS): the total cost of products you've sold during a period, combining direct materials, direct labour, and allocated overhead.
• Work-in-progress (WIP): products that are partially complete at any point in time. Tracking WIP accurately is essential for understanding your true inventory value.
• Finished goods inventory: completed products ready for sale, valued at the full cost incurred during production.

Calculating cost of goods manufactured (COGM) and cost of goods sold (COGS)

Cost of goods manufactured (COGM) is the total cost of all products you finished during a period. Cost of goods sold (COGS) is the cost of products you actually sold. Understanding both is essential for setting prices, measuring margins, and preparing accurate financial statements.

COGM formula

COGM captures everything you spent to turn raw materials into finished goods during a period.

COGM = Direct materials used + Direct labour + Manufacturing overhead + Beginning WIP inventory − Ending WIP inventory

To calculate direct materials used:

Direct materials used = Beginning raw materials inventory + Purchases − Ending raw materials inventory

COGS formula

COGS builds on COGM by accounting for changes in your finished goods inventory.

COGS = Beginning finished goods inventory + COGM − Ending finished goods inventory

Worked example

Imagine you run a furniture workshop in the UK. Here's how a month's figures might look.

• Beginning raw materials: £5,000
• Raw materials purchased: £12,000
• Ending raw materials: £3,000
• Direct labour: £8,000
• Manufacturing overhead: £4,000
• Beginning WIP: £2,000
• Ending WIP: £1,500
• Beginning finished goods: £6,000
• Ending finished goods: £4,000

Step 1: Direct materials used = £5,000 + £12,000 − £3,000 = £14,000

Step 2: COGM = £14,000 + £8,000 + £4,000 + £2,000 − £1,500 = £26,500

Step 3: COGS = £6,000 + £26,500 − £4,000 = £28,500

This tells you the cost of all products sold that month was £28,500. Compare this against your revenue to measure gross profit.

Choose the right costing methods

Choosing the right costing method affects how accurately you calculate product costs, set prices, and measure profitability. Different methods suit different types of manufacturing, so understanding your options helps you make better decisions.

The examples below give you an overview. Discuss the best fit for your business with your accountant or financial adviser.

• Job order costing: tracks costs for each batch or custom order. Best for businesses making unique or small-batch products where costs vary significantly between jobs.
• Process costing: assigns costs by department or production stage. Suits continuous production of identical items where tracking individual units isn't practical.
• Activity-based costing (ABC): allocates overhead based on specific activities that drive costs. Useful for identifying inefficiencies and understanding true product profitability.
• Variable costing: includes only costs that change with production volume. Helps with short-term pricing decisions and break-even analysis.
• Absorption costing: includes all manufacturing costs, both fixed and variable, in product costs. This aligns with UK accounting standards under Financial Reporting Standard (FRS) 102 and is required for external financial reporting.
• Standard costing: compares actual costs against predetermined standards to identify variances. Helpful for budgeting and performance monitoring.

When to use each method

The right method depends on how you manufacture. Here's a quick guide to matching your production type with the most suitable approach.

• Custom or batch production: job order costing tracks costs per order.
• Continuous production: process costing spreads costs across departments.
• Complex overhead structures: ABC pinpoints cost drivers and reveals hidden inefficiencies.
• Short-term pricing decisions: variable costing isolates the costs that change with volume.
• External reporting and compliance: absorption costing meets FRS 102 requirements.
• Budgeting and performance monitoring: standard costing highlights variances from plan.

You may use different methods for different purposes. Many manufacturers combine approaches to get both accurate product costs and useful management insights.

Manage inventory and work-in-progress

Inventory management in manufacturing means tracking items at three stages: raw materials, work-in-progress, and finished goods. Getting this right affects your financial statements, tax obligations, and ability to make informed decisions.

Key areas to track:

• Raw materials: components and supplies waiting to enter production.
• Work-in-progress (WIP): partially completed products still on the production floor.
• Finished goods: completed products ready for sale or shipment.

You'll also need to choose an inventory valuation method:

• First in, first out (FIFO): assumes oldest inventory sells first. Often matches physical flow and shows higher profits when costs rise.
• Last in, first out (LIFO): assumes newest inventory sells first. Can reduce tax liability when costs rise, but isn't permitted under International Financial Reporting Standards (IFRS).
• Weighted average: calculates average cost across all units. Simplifies tracking when individual items are hard to distinguish.

Accurate WIP tracking is particularly important. If you undervalue work-in-progress, you'll understate your assets and overstate your costs. If you overvalue it, you'll do the opposite.

Essential accounting processes for manufacturers

With your costing methods and inventory tracking in place, you need consistent processes to keep your accounts accurate. These processes form the foundation of reliable financial data and help you spot issues early.

Track these elements consistently:

• Transactions: record all purchases, sales, and payments in the correct ledger. Categorise expenses accurately to understand where money goes.
• Assets and liabilities: update these regularly, not just at period end. Knowing your financial position helps with cash flow planning.
• Cash flow: monitor bank balances closely. Manufacturing often involves large material purchases before you receive payment for finished goods.
• Production costs: capture labour hours, material usage, and overhead as production happens. Delayed recording leads to inaccurate product costs.

Cloud-based accounting software makes these processes easier by automating data capture and providing real-time visibility into your finances. Automated bank feeds pull transactions directly into your accounts, reducing manual entry and the risk of errors.

Financial reporting and compliance

Financial reporting gives you a clear picture of your manufacturing business's health and ensures you meet your legal obligations. As a UK manufacturer, you'll need to produce several key reports and follow specific accounting standards.

Key financial reports for manufacturers

These reports help you track profitability, manage cash, and make informed production decisions.

• Profit and loss statement (P&L): shows revenue, COGS, and expenses over a period so you can see whether your manufacturing operation is profitable.
• Balance sheet: summarises your assets (including inventory at all three stages), liabilities, and equity at a point in time.
• Cash flow statement: tracks money coming in and going out. Especially important for manufacturers who often pay for materials well before receiving payment for finished goods.
• Production performance reports: track output, waste, yield rates, and cost variances to help you identify inefficiencies on the factory floor.

UK compliance requirements

UK manufacturers must follow specific accounting standards when preparing financial statements.

• FRS 102 (The Financial Reporting Standard applicable in the UK and Republic of Ireland): this is the main standard most UK small and medium businesses follow. It requires you to value inventory at the lower of cost and estimated selling price less costs to complete and sell.
• Overhead allocation: FRS 102 requires you to allocate fixed production overheads based on normal capacity, which is the average production level you expect over several periods.
• HMRC requirements: keep records of all production costs, inventory valuations, and overhead allocation methods. HMRC may review these during compliance checks.

Working with an accountant familiar with UK manufacturing standards helps ensure your reports meet these requirements and that your inventory valuations can withstand scrutiny.

Common manufacturing accounting challenges and how to avoid them

Manufacturing accounting has a learning curve. Knowing the common pitfalls and their remedies helps you avoid costly mistakes and keep your accounts accurate.

Inaccurate overhead allocation

Deciding how to spread indirect costs across products affects your profitability calculations. If you allocate too much overhead to one product, it looks less profitable than it really is.

The remedy: use activity-based costing to identify the actual drivers of overhead costs. Review your allocation bases regularly and adjust as your production mix changes. UK financial reporting standards require fixed overheads to be allocated on the basis of normal capacity.

Poor work-in-progress tracking

Valuing partially completed items requires consistent processes and accurate data capture. Errors here distort both your balance sheet and your cost of goods sold.

The remedy: implement real-time production tracking so WIP values update as items move through each stage. Set up regular physical counts to verify system data and catch discrepancies early.

Capital expenditure misclassification

Confusing capital expenditure (CapEx) with operating expenditure (OpEx) can misrepresent your financial position. CapEx covers assets with long-term value, such as machinery, while OpEx covers day-to-day running costs like maintenance and consumables.

The remedy: establish a clear capitalisation policy with a minimum threshold. Review all significant purchases against this policy before recording them, and apply consistent depreciation methods to capitalised assets.

Revenue recognition errors

Manufacturing contracts can span long periods, making it tricky to recognise revenue in the right accounting period. Recording revenue too early or too late skews your financial results.

The remedy: follow the five-step model for revenue recognition: identify the contract, performance obligations, transaction price, allocation, and the point at which obligations are satisfied. For long-term contracts, consider recognising revenue over time based on progress.

Missing tax planning opportunities

Many manufacturers overlook valuable tax reliefs. Research and development (R&D) tax credits, for example, can offset costs of developing new products or improving manufacturing processes.

The remedy: review your activities annually with a tax specialist to identify qualifying R&D expenditure and other available reliefs. Keep detailed records of development work, materials used, and staff time dedicated to qualifying projects.

System integration gaps

Getting your accounting software to work with production and inventory tools takes planning. Disconnected systems lead to manual data entry, duplication, and errors.

The remedy: choose accounting software that integrates with your existing production and inventory management tools. Map your data flows before implementation and test integrations thoroughly before going live.

Choose accounting software for manufacturing

Now that you understand costing methods and inventory tracking, you can evaluate software with the right features in mind. The right accounting software saves time, reduces errors, and gives you visibility into your true costs.

Look for software that offers:

• Multi-stage inventory tracking: manages raw materials, WIP, and finished goods separately so you always know what you have and what it's worth.
• Overhead allocation tools: distributes indirect costs across products accurately, supporting methods like ABC or absorption costing.
• Enterprise resource planning (ERP) integration: connects accounting with production planning, procurement, and supply chain management for a complete view of your operations.
• Materials requirements planning (MRP) capabilities: helps you plan material purchases based on production schedules, reducing waste and stockouts.
• Real-time reporting: shows up-to-date cost, inventory, and profitability data so you can make faster, better-informed decisions.
• Cloud-based access: lets you check finances from anywhere and reduces IT infrastructure costs.
• App integrations: connects to payroll, inventory management, and other business tools you already use.

Before choosing, research what similar businesses use. Ask colleagues, read reviews, and test options with free trials to find the best fit for your manufacturing operation.

Simplify your manufacturing accounting with Xero

With the right systems in place, manufacturing accounting becomes a tool for better decisions, not just compliance. You'll know your true product costs, identify your most profitable lines, and spot inefficiencies before they affect your bottom line.

Xero's accounting software for manufacturers connects with apps designed for production businesses, helping you track costs and manage inventory in one place. Get one month free to see how it works for your business.

FAQs on manufacturing accounting

Here are answers to frequently asked questions about manufacturing accounting.

What is the difference between COGM and COGS?

Cost of goods manufactured (COGM) is the total cost of all products you finished during a period. Cost of goods sold (COGS) is the cost of finished products you actually sold. COGS builds on COGM by adjusting for changes in your finished goods inventory.

What are variable and fixed costs in manufacturing?

Variable costs change with production volume, for example, raw materials and production-line electricity. Fixed costs stay the same regardless of output, such as factory rent, insurance, and equipment leases. Understanding this distinction helps with pricing decisions and break-even analysis.

Which UK accounting standard applies to manufacturers?

Most UK manufacturers follow FRS 102, the Financial Reporting Standard applicable in the UK and Republic of Ireland. It sets out rules for inventory valuation, overhead allocation, and financial reporting. FRS 102 requires inventory to be valued at the lower of cost and estimated selling price less costs to complete and sell.

How do I allocate manufacturing overhead?

Allocate overhead by choosing a consistent basis, such as machine hours, labour hours, or production volume. UK standards require fixed overheads to be allocated based on normal capacity. Activity-based costing can help if you have complex overhead structures with multiple cost drivers.

Can small manufacturers benefit from R&D tax credits?

Yes. If you're developing new products, improving manufacturing processes, or solving technical challenges, you may qualify for R&D tax relief. Keep detailed records of qualifying activities, materials, and staff time, and review your eligibility annually with a tax specialist.