Accounting for Multiple Businesses: How to See the Profit of Each Business Line

Accounting for multiple businesses starts with one decision: what counts as a separate business and what counts as a line within one business. A separate business has its own accounts, team and reports. A business line shares accounts and team with the others but has its own profit in the breakdown.

Below you will find the criteria for choosing the form, four steps for calculating the profit of each business line using a coffee shop as the example, and a section on how to keep this in your accounting.

In plain terms. Picture a building with several apartments and an apartment with several rooms. A separate business is an apartment: its own keys, its own meter, its own residents. A business line is a room: the meter is shared, but you can work out separately how much each room uses.

A separate business or a business line: how to decide

The form affects which reports you get. A separate business gives you a full set of reports for itself. A business line within one business gives you a comparison with the other lines, but the shared accounts and team stay shared.

The guideline is simple. If you need a separate balance of accounts, a separate team or a separate reporting currency, it is a separate business. If you only need to compare profitability, a business line is enough. You can revisit the decision when a line grows: a line that has acquired its own team and accounts is easier to run as a separate business.

What to keep separate in each business

When there are several businesses, each one has its own lists: accounts, categories, counterparties, projects. This gives clear numbers but requires the habit of recording everything in its own place.

Funds. Each business has its own accounts, and the balance of one is not mixed with the balance of another. If funds move from one business to another, they are recorded in each business as a separate entry with an explanatory comment: for example, as an owner's withdrawal in the first and an owner's contribution in the second. If it is a loan between businesses, it is just as important to document the agreement. The rules for accounting for such transactions depend on the country, so check them with a lawyer or an accountant.

Team. Employees of each business see only that business. The owner manages access in each business separately and can grant different permissions for different roles.

Counterparties. A supplier that works with both businesses is recorded in each. This is duplication, but the counterparty reports stay accurate for each business separately.

How to calculate the profit of each business line

The calculation takes four steps. Take Max's coffee shop with three lines: dining room, delivery and catering. The amounts in the example are illustrative and rounded, so you can easily repeat the calculation with your own data.

Step one: direct transactions by line

Direct transactions are those that belong to one line: dining room revenue, ingredients for catering, the delivery platform's commission. They are recorded with a line tag right when you enter them. Why: separating revenue and costs by line later is much harder than tagging them at the moment of entry.

Step two: shared costs

Shared costs relate to all lines at once: rent, the manager's salary, utilities. They are allocated among the lines later, as a separate step. For Max's coffee shop they come to $2,500 per month: rent $1,500 and the manager $1,000.

Step three: the allocation base

The allocation base is the indicator in proportion to which shared costs are divided. A simple base is the share of revenue. You can choose another one, for example the floor area each line occupies or the kitchen hours spent on each line. For each group of shared costs, it is worth choosing a suitable base and applying it consistently, so that months can be compared. For example, rent can be divided by floor area and the manager's work by share of revenue. In the example below, both groups are divided by share of revenue for simplicity.

Line's share of shared costs = Line revenue ÷ Revenue of all lines × Shared costs

Max's dining room revenue is $5,000 out of $10,000, which is 50%. So the dining room receives 50% of shared costs, that is $1,250. Delivery, with revenue of $3,000, has a 30% share and receives $750. Catering, with revenue of $2,000, has a 20% share and receives $500. In total $1,250 + $750 + $500 = $2,500, so all shared costs are allocated.

Step four: line profit and margin

Line profit = Line revenue − Direct costs − Line's share of shared costs

Line margin = Line profit ÷ Line revenue × 100%

The direct costs for the example are as follows: $2,250 for the dining room, $1,800 for delivery (ingredients and platform commission), and $700 for catering. Let's plug in Max's numbers. For the dining room: $5,000 − $2,250 − $1,250 = $1,500, margin 1,500 ÷ 5,000 = 30%. For delivery: $3,000 − $1,800 − $750 = $450, margin 450 ÷ 3,000 = 15%. For catering: $2,000 − $700 − $500 = $800, margin 800 ÷ 2,000 = 40%.

Check: $10,000 − $4,750 − $2,500 = $2,750, and the sum of the line profits $1,500 + $450 + $800 = $2,750. Overall margin 2,750 ÷ 10,000 = 27.5%.

Picture Max. He runs the coffee shop and sees that delivery accounts for 30% of total revenue, yet it takes a lot of time. The calculation shows it brings $450 in profit with a 15% margin, the lowest of the three lines. Max does not conclude that delivery should be shut down. He checks the platform commission and the prices on the delivery menu, because these two factors determine its margin.

What the results show

The calculation gives a basis for questions, and the owner makes the decision. A line with a high margin and low revenue, like catering in the example, may have room to grow. A line with a low margin and high revenue, like delivery, may benefit from a review of prices or commissions.

It is useful to look at two numbers together: the margin and the share of total profit. Catering has a 40% margin but provides only 800 ÷ 2,750, about 29% of profit. The dining room provides 1,500 ÷ 2,750, about 55%. This view helps determine where effort will have the greater effect.

There is also a second view that does not depend on the allocation base. It is line profit before shared costs, that is, revenue minus direct costs. For the dining room it is $2,750, for delivery $1,200, for catering $1,300, $5,250 in total. From this amount the shared $2,500 is covered, leaving $2,750 of profit. This view helps when deciding whether to keep a line: shared costs exist without it, and a line with a positive result covers part of them.

It is worth repeating the calculation every month under the same rules. Then you can see the trend: whether delivery's margin grows after a price review and whether catering's share holds.

How to keep businesses and business lines in your accounting

A manual calculation works while there are two or three lines and few entries. When there are hundreds of entries, splitting them by line by hand takes time. This is where accounting with line tags helps.

In BizFin, each business has its own accounts, transactions, categories, team and reports. A separate business in BizFin is a separate accounting space. Creating one does not mean registering a new company or sole proprietorship. A new business is created in the «My Businesses» section with the «Create» button. You enter a name and the main currency in which reports are consolidated, and, if you like, an industry and a logo. It is worth deciding on the main currency right away, when creating the business. You can switch between businesses in the list at the top of the left panel. The directories of each business are separate: a counterparty or a project needed in both is recorded in each.

Business lines within one business are kept as projects. In the «Directories» section, on the «Projects» tab, you add «Dining Room,» «Delivery,» «Catering,» and in the transaction form you choose the project in the «Project» field. In the «Projects» report under «Analytics,» you can see income, expenses, profit and margin for each project. Transactions without a tag, including shared costs, go into the «No Project» row. The «Average Margin» card shows the margin of all transactions in the period, including this row: total profit ÷ total income. For Max, this is 2,750 ÷ 10,000 = 27.5%, the same as the total in the calculation.

The report shows line profit after direct costs. You perform the allocation of shared costs by a base, as in the calculation above, separately: a transaction has one «Project» field, and one transaction cannot yet be split into several parts. If you need to divide a shared payment between lines, it is entered as several separate transactions. The total of these entries must equal the payment. If the payment has already been imported from the bank, it is not added again. Such a payment is easier to leave without a project and divide among the lines in the calculation, as in step three: in proportion to revenue, floor area or working hours. In the «Transactions» feed there is no project filter yet, but you can find a project through search.

What to remember

• The form depends on the reports you need. A separate balance, team or currency means a separate business. A business line is enough for comparing profitability.

• It is convenient to tag a line at the time of entry. Direct transactions tagged right away do not have to be sorted from memory at the end of the month.

• Shared costs are allocated by a base. For each group of shared costs, it is worth choosing a suitable base: share of revenue, floor area or working hours. The chosen base is applied consistently every month.

• It is useful to look at margin and share of profit together. A line with a high margin and low revenue and a line with a low margin and high revenue call for different decisions.

• It is worth repeating the calculation every month. The same rules give comparable months and show how each line changes.

Frequently asked questions

What is accounting for multiple businesses?

It is keeping your finances so that you see the numbers of each business or line separately and together. The basis is this: the accounts and entries of each business are kept separate, while lines within a business are tagged with projects.

When is it better to set up a separate business and when a project?

A separate business is needed if there are separate accounts, a team, a reporting currency or a legal form. A project fits when you need to compare the profitability of lines within one business.

How do I allocate shared costs among business lines?

First, for each group of shared costs, you choose a base in proportion to which it is divided: share of revenue, floor area, working hours. You multiply the line's share by the amount of shared costs, and it is worth keeping the chosen bases the same every month.

Can I see the profit of several businesses together?

Reports are generated for each business separately, so you consolidate the total yourself. To do this, it is convenient to open the «Profit and Loss» report of each business for the same period and add up the results. If the main currencies of the businesses differ, the amounts are first converted into one currency.

What do I do with a cost that relates to several lines?

You can leave it without a project as a shared cost and allocate it by a base in the calculation. If you need to show it in several projects, you enter it as several separate transactions for the corresponding amounts. The total of these entries must equal the payment. If the payment has already been imported from the bank, it is not added again: such a payment is easier to leave without a project and allocate by a base in the calculation.

How many lines are worth keeping separately?

As many as help you make decisions. A line whose profit you do not plan to compare does not have to be kept separately, and its transactions stay in the overall accounting.