Tax Records vs. Accounting: What’s the Difference Between Them, and Which One Is Right for You?

Quick Overview

In short: Tax record-keeping is primarily suitable for smaller and simpler businesses. Bookkeeping provides a more accurate picture of a business’s financial situation, and certain individuals are required by law to maintain it. However, being a VAT payer does not automatically mean that a self-employed person must switch to bookkeeping.

From our experience: Business owners often confuse VAT registration with the obligation to maintain accounting records. However, these are two distinct matters. A self-employed individual may be a VAT payer and continue to maintain tax records as long as they have not become an accounting entity for another legal reason.

Not sure whether tax records are still sufficient for you, or if you’re already required to maintain accounting records? Our attorneys will review your situation and advise you on other obligations that may arise from business growth, a change in legal form, or registration in the Commercial Register.

What Is Tax Record-Keeping?

Tax records are a simpler way to track taxes for individuals—typically sole proprietors. They are governed by the Income Tax Act, and their main purpose is very practical: your tax records must clearly show your income tax base for the given year. In other words, the tax office wants to see how you arrived at the figure on your tax return.

Therefore, in your tax records, you primarily track income and expenses, broken down in such a way that it is clear which expenses are tax-deductible and which are not. You also keep track of your assets ( such as a car, computer, machinery, or office equipment) and your liabilities and debts —for example, unpaid invoices to suppliers or loans. Tax records also include the data you need for the year-end inventory. An inventory involves reviewing and verifying that what you have on paper matches reality—that is, that the assets actually exist and the liabilities are correctly reported.

For tax records, what matters is what you actually paid and actually received into your account or in cash during the given year. If you issue an invoice in November but the customer doesn’t pay until January, the revenue will not appear in your tax records until January. Similarly, you don’t record an expense for an invoice to a supplier until you actually pay it. This is a fundamental difference from financial accounting, which tracks costs and revenues regardless of the payment date.

Tax accounting is therefore a reasonable compromise for most small business owners: it’s straightforward, less administratively burdensome, and fully sufficient for the tax authorities. On the other hand, when you need to convince a bank, investor, or business partner of the stability of your business, its informational value may be limited.

What Is Accounting

Accounting (formerly known as double-entry bookkeeping), on the other hand, is a comprehensive system governed by the Accounting Act. Its purpose is not merely to calculate taxes. Accounting is intended to provide a true and fair view of a business’s financial performance —that is, to show as accurately as possible how a business is actually faring, what assets it holds, what debts it has, what its profit is, and how strong its equity base is.

The basic principle of accounting is the so-called double-entry system. Every accounting transaction is recorded simultaneously in two accounts—on the “debit” side and the “credit” side. You don’t necessarily need to memorize accounting jargon; what’s important is to understand what it means: every transaction always has two sides. When you pay a supplier for goods, your account balance decreases, but at the same time, your liability to the supplier is eliminated. When you buy a car on credit, you gain an asset (the car), but at the same time, you also incur a liability to the bank. Double-entry bookkeeping ensures that these two sides of the transaction are never lost in the accounting records.

Another key concept in accounting is the accrual principle. This means that expenses and revenues are recorded in the period to which they relate in terms of substance and timing, rather than based on when payment was made. For example, if you deliver goods in December but the customer doesn’t pay until January, the revenue appears in the books as early as December because it relates to that period. Similarly, an invoice from a supplier for December services is classified as a December expense, even if you don’t actually pay it until, say, February. This allows accounting to better reflect a company’s actual performance in each year and enables meaningful comparisons between periods.

The result of year-end accounting is the financial statements. These typically include a balance sheet (an overview of the company’s assets and liabilities), an income statement (an overview of expenses, revenue, and net income or loss), and notes to the financial statements, which explain the accounting policies used and provide additional important information. For larger companies, acash flow statement and a statement of changes in equity may also be included. For some entities, the law requires that the financial statements be audited by an auditor—an independent expert who assesses whether the accounting records truly provide a fair and accurate picture.

For smaller businesses, tax records are therefore often a more suitable option, as they are simpler and less expensive to maintain. However, as a business grows—with an increase in employees, loans, leases, and inventory, and a need to communicate with banks and investors—it begins to make sense to adopt full-scale accounting, which can present the business in a much broader context.

Who Is Required to Keep Accounting Records and Who Can Stick to Tax Records

Under the Accounting Act, legal entities are primarily required to maintain accounting records. This includes all companies with their registered office in the Czech Republic, typically limited liability companies (s.r.o.), joint-stock companies, cooperatives, or associations. Foreign legal entities must also maintain accounting records if they conduct business in the Czech Republic or have an organizational unit here.

However, this obligation may also apply to individuals—specifically, business owners. Every individual registered in the Commercial Register must maintain accounting records. The same requirement applies to self-employed individuals whose annual turnover exceeds 25,000,000 CZK. In such cases, the self-employed individual becomes an accounting entity.

Who Can Continue to Use Tax Records

On the other hand, there is a large group of entrepreneurs who can continue to use the simplified tax record-keeping system without any issues. These are primarily self-employed individuals who are not registered in the Commercial Register and whose annual turnover does not exceed 25 million CZK. These entrepreneurs can choose whether to use flat-rate expenses or maintain tax records.

It is important to note that being a VAT payer does not in itself imply an obligation to maintain accounting records. Even VAT payers may continue to use the tax record-keeping system if they meet the conditions mentioned above—that is, they are not an accounting entity under the Accounting Act. The only additional requirement for tax records is the obligation to maintain separate records for VAT purposes so that a VAT return and any required control reports can be prepared.

Voluntary Accounting for Sole Proprietors

In addition to mandatory bookkeeping, there is also the option of voluntary bookkeeping. Some sole proprietors choose this option even though the law does not require it. Typically, these are entrepreneurs who want to provide professional financial statements to a bank or investor, as financial statements and standard accounting reports are more understandable to financial institutions than tax records.

Another reason may be a planned transfer of the business to a limited liability company (s.r.o.). If a sole proprietor knows that they will soon establish a limited liability company (s.r.o.) and transfer part of their business into it, voluntary accounting can help them better prepare for this transition and gain a clearer overview of their assets, liabilities, and financial results.

Voluntary accounting also makes sense for entrepreneurs with a more complex business structure —for example, those with multiple business locations, employees, leases, loans, and a larger volume of assets. In such situations, tax records sometimes no longer provide a sufficiently detailed and reliable picture.

When an Entrepreneur Keeps Neither Tax Records Nor Accounting Records

There are situations where an entrepreneur keeps neither accounting records nor tax records in the traditional sense. However, this does not mean that they do not have to keep any records at all or that they can operate entirely without documentation. The rule is always that you must be able to prove your income and fulfill your tax and record-keeping obligations; it’s just that the form is significantly simpler.

A typical example is self-employed individuals who claim a flat-rate expense deduction. If an entrepreneur pays income tax by applying a flat-rate expense deduction to their earned income (for example, 60%, 40%, or 80%, depending on the type of activity), the law does not require them to maintain traditional tax records.

However, even with the flat-rate method, an entrepreneur cannot do without some form of record-keeping. They must keep track of their income, typically in the form of a simple list of issued invoices, cash register receipts, or account transactions. This information serves as the basis for the tax return and for any potential audit.

Entrepreneurs under the flat-rate tax regime constitute a special group. They do not file a traditional income tax return and pay a monthly flat-rate amount that includes income tax, social security, and health insurance. These entrepreneurs are also not required to maintain tax records or accounting records, but they must still be able to prove the amount of their income —primarily to meet the conditions for entering and remaining in the flat-rate tax regime. In practice, therefore—just as with flat-rate expenses—they usually maintain basic records of issued invoices and received payments, albeit on a simpler scale.

It is important to emphasize that even if an entrepreneur does not maintain tax records or accounting, general obligations regarding the retention of documents and contracts still apply. Invoices, receipts, bank statements, and contracts must be archived for the period specified by law, as they may be required during a tax audit.

Tax Records vs. Accounting: Examples

An unpaid invoice by a customer

Imagine that in December 2025, you issue an invoice to a customer for 100,000 CZK for a service you have already fully provided. However, the customer does not pay until January 2026.

For tax records, what matters is the moment the money actually arrives in your account. Therefore, you will not record the income of 100,000 CZK until January 2026. This transaction will not appear at all on your 2025 tax return, even though you actually provided the service.

In accounting, what matters is when the service was rendered and invoiced. You will record the revenue of 100,000 CZK by December 2025—that is, during the period when you provided the service. Although the account balance will not change until January 2026, in your accounting records you will already have recorded the receivable from the customer in December 2025 and the revenue for 2025. The accounting records therefore show that you “earned” this money in 2025, even though it will not physically arrive until the following year.

Invoice from a Supplier

In December 2025, your supplier delivers materials to you and issues an invoice for 50,000 CZK. However, you won’t pay it until January 15, 2026.

You will record the expensein your tax records only at the time of payment, i.e., on January 15, 2026. This expense is not included in the tax base for 2025; it will be fully reflected only in the 2026 tax return.

In your accounting records, you will recognize the 50,000 CZK expense as early as December 2025, because the materials relate to that period. In December, an expense and a liability to the supplier arise, which will remain unpaid until you pay the invoice in January. In 2026, the accounting records will only reflect the settlement of the liability, not a new expense. From the perspective of the income statement, the expense is correctly allocated to 2025, even though the funds will not leave your account until the following year.

Advance Payment from a Customer

In July 2025, a customer sends you an advance payment of 80,000 CZK for an order that you will not complete and invoice until September 2025.

For tax purposes, what matters is that you received the money in July. The advance payment will therefore appear as revenue in July, which is included in your taxable income. Once you issue the final invoice in September, the customer will pay you only the remaining amount. In summary, your 2025 income will include the full value of the job at the times when you actually received the money.

In accounting, the advance payment in July is not yet revenue. It is recorded as an advance received, i.e., a liability to the customer—you effectively “owe” them the delivery of services or goods. It does not become revenue until September, when you complete the order and issue the final invoice. Only then will the accounting records recognize the full amount of revenue and, at the same time, settle the advance payment received. The result is that revenue is recognized at the time you actually provided the service, not when the money was received.

Inventory on Hand

You run an online store selling electronics. At the end of 2025, you have goods remaining in inventory with a purchase price of 400,000 CZK.

In tax records, inventory is reflected “indirectly.” You’re primarily interested in actual purchases of goods (payments to suppliers) during the year, which are recorded as expenses. However, to ensure that tax records reflect reality, the impact of inventory on the tax base is also addressed during transitions between accounting regimes (e.g., when switching to general accounting). During the current year, however, tax records do not require a detailed breakdown of inventory—it is sufficient to have separately recorded purchases of goods and, if necessary, a physical inventory count.

In accounting, inventory plays a significantly more important role. At the end of the year, you must conduct a physical inventory count and, based on the actual balance, record inventory as an asset on the balance sheet. Only the portion of goods purchased that corresponds to goods sold (cost of goods sold) is included in expenses for the given year; the remainder remains as inventory on the balance sheet. This way, your accounting will more accurately reflect your profit from the sale of goods, as it separates the cost of goods sold from the cost of goods still in inventory.

Pros and Cons: Tax Record-Keeping or Accounting?

Deciding whether bookkeeping makes sense for your business or whether tax records are sufficient is not just a technical choice. It will affect how much time you spend on administrative tasks, how much you pay your accountant, what information you’ll have about your business, and how a bank or investor will view you. So let’s take a closer look at the pros and cons of both systems:

Advantages of tax records

• Simpler administration: The structure of the records is more straightforward than with full-scale accounting—you mainly track income and expenses, assets, and liabilities, and you don’t have to deal with double-entry bookkeeping or complex accounting procedures.
• Lower accounting costs: You can manage your tax records yourself using a simple program or spreadsheet. Overall, tax record-keeping is therefore less expensive than full-scale accounting.
• Better overview of cash flow: Tax records naturally reflect the movement of money. You can see what actually came into your account or cash register and what you actually paid. For cash flow management, this is often easier to understand than traditional accounting, which deals with expenses and revenues regardless of the payment date.

Disadvantages of tax accounting

• Less informative: Tax records provide lessinsight into a company’s actual performance. Because they deal only with cash flows, they cannot effectively distinguish between what belongs to the current year and what is economically linked to another period. For orders spanning the turn of the year, inventory, or longer-term projects, the figures in tax records do not reflect how an economist would realistically evaluate your company.
• Less Attractive to Banks and Investors: When applying for a loan, the bank often requires a balance sheet and a profit and loss statement—that is, financial statements derived from accounting. Tax records are less transparent to them—while they can see revenue and expenses, they don’t get a comprehensive picture of assets, liabilities, debt, or profit. The result? The bank has to calculate the figures in various ways and may be more cautious when approving a loan or setting terms.
• The Risk of Having to Make the Transition: If your business is thriving and your revenue is approaching the 25 million koruna threshold, you must expect that once you exceed it, you’ll have to switch from tax records to full accounting. And this is not just a formality. It involves taking inventory of assets and liabilities, adjusting the tax base, setting up a new system—often requiring new software—and intensive work by an accountant.

The most common mistake when scaling a business: Entrepreneurs often don’t start addressing the transition until the very moment they’re actually required to begin bookkeeping. However, it’s advisable to prepare an inventory of assets, receivables, liabilities, and inventory well in advance; otherwise, it may be difficult to accurately determine opening balances and tax implications.

In summary: tax records are great as long as the business is relatively simple and small. But as soon as you seek more financing, experience rapid growth, or have a more complex structure, their limitations become very apparent.

Benefits of Accounting

• A Complete Picture of Financial Performance: Accounting not only shows you revenue and expenses, but also—and most importantly—profit or loss, the value of assets, the amount of liabilities, and the structure of equity, and allows you to work with a range of useful metrics (margins, debt, profitability). Thanks to the accrual basis of accounting, costs and revenues are allocated to the period to which they relate—so the results for each year better reflect reality.
• Greater credibility: Financial statements are a standardized document that banks, investors, and business partners understand. If you want to secure loans in the millions, attract investment, or enter into more complex business relationships, choosing this accounting method will be more advantageous for you.
• Easier comparison over time: Because accounting doesn’t “jump around” based on exactly when someone paid an invoice, it’s easier to compare individual years. You can reasonably assess whether you’re doing better or worse, and track trends in profit, employee costs, margins, or debt. For strategic decision-making (investments, hiring, expansion), this kind of overview is significantly more useful than a simple cash flow statement.

Disadvantages of Accounting

• Greater demands on knowledge and time: Managing your own accounting without sufficient knowledge is very risky. More complex accounting transactions can easily lead to errors, which may result in additional tax assessments, penalties, and fines during an audit. Once VAT, employees, and various types of contracts come into play, it is practically essential to have a professional who systematically monitors your accounting and taxes.
• Higher costs for professional bookkeeping: The point mentioned above is also linked to higher bookkeeping costs. While tax record-keeping often requires only a few hours of an accountant’s work per year, accounting involves ongoing bookkeeping, monthly or quarterly closings, annual financial statements, communication with authorities, and often additional services (consulting, setting up internal processes). So you either pay an accounting firm or hire your own accountant. In both cases, this is an expense you must factor into your budget.
• More Responsibilities: The accounting entity must conduct inventory counts, prepare financial statements, in some cases have the accounts audited by an auditor, and ensure compliance with formal requirements (chart of accounts, internal guidelines, publication of financial statements in the Collection of Documents, etc.).

Transition from Tax Records to Accounting (and Back)

Let’s take a look at when the transition between tax records and accounting is mandatory, when it’s voluntary, and how it works from a technical standpoint so that both systems seamlessly connect and no unnecessary problems arise with taxes or the authorities.

When You Must Switch from Tax Records to Accounting

The question of transitioning from tax records to accounting arises when your business is no longer a “small trade” but begins to take on a larger scale. The law specifies quite precisely when tax records are no longer sufficient and when you become an accounting entity required to maintain accounting records.

The mandatory transition occurs primarily in two situations:

1. When, as a self-employed individual, you exceed a turnover of 25 million crowns in a calendar year: For example, if you exceed the statutory turnover limit in 2026, you will become an accounting entity as of January 1, 2027. However, according to the legal framework, you will not begin keeping full accounting records until the first day of the following fiscal year—that is, for a calendar-based fiscal year, starting January 1, 2028. Therefore, in 2026 and 2027, you can still continue using tax records, but you must already prepare for taking inventory and establishing opening balances.
2. Registration in the Commercial Register: As soon as you voluntarily register as a natural person in the Commercial Register (for example, because your business partners require it), you are required to maintain accounting records as of the date of registration. From that point on, tax records can no longer replace accounting.

In addition to the mandatory transition, there is also a voluntary transition. You can switch to full accounting at any time, even if you do not meet the legal thresholds. You can decide to make the switch at any time during the year, but the actual transition takes effect on the first day of the new fiscal year (usually January 1)—not at any arbitrary time during the year.

How the transition works technically: the transition bridge

The transition from tax records to accounting isn’t just a matter of getting a new accounting program on January 1 and starting to record transactions “from scratch.” Your accounting must seamlessly build on what you’ve done previously so that it’s clear what assets and liabilities you have at the time of the transition and what the tax implications are.

During the transition, you must:

• Take inventory of assets and liabilities: First, you need to take inventory of your assets and liabilities as of the last day you maintained tax records—typically December 31. In practice, this means reviewing inventory, fixed assets (cars, machinery, equipment), accounts receivable, accounts payable, loans, advances, and other items, and verifying that their balances are accurate.
• Transfer the results of the inventory count to the opening balances on the balance sheet in your accounting records: What you previously had only in your tax records (such as a list of assets or liabilities) will now be reflected in specific accounts in your financial statements—assets under “Assets,” liabilities and loans under “Liabilities,” and equity in the appropriate accounts.
• Adjust the tax base in accordance with the annex to the Income Tax Act: The law anticipates that, during the transition from one regime to another, certain expenses might otherwise be claimed twice, or conversely, that a portion of income might not be taxed at all. Therefore, adjustments are made primarily to inventory, securities, accounts receivable, and advances paid and received. Some items will increase the tax base, while others may reduce it. Furthermore, for inventory and receivables, the law allows you to spread the impact on the tax base over multiple years (up to a period of nine years), so it is not necessary to “carry everything over” in a single year.

In modern accounting software, a feature known as a “reconciliation bridge from tax records to accounting” is often used for this process . This is a feature or module that allows you to import data from tax records (such as a list of items and their balances), and the program automatically assigns them to the correct accounts in the chart of accounts. The result is a set of opening balances that you then use to start your accounting. Although the software can save a lot of work, it’s always necessary for someone to review this step.

Practical Note: Automatic data conversion in accounting software does not replace the review by an accountant or tax advisor. For example, the software generally cannot detect incorrectly valued inventory, a time-barred receivable, or a liability that has actually been extinguished.

Transition from Accounting to Tax Record-Keeping

The reverse process—that is, the transition from accounting to tax records—is less common in practice, but it is not impossible. This typically occurs with self-employed individuals who kept accounting records voluntarily (e.g., for a bank or for internal reporting) and eventually realized that the administrative burden was too great for them.

In this case as well, the procedure is similar to that for the transition in the opposite direction— adjustments to the tax base are again made. However, it is essential to note that a business owner who maintains accounting records may only discontinue doing so after fulfilling the legal requirements—specifically, after a certain minimum period of maintaining records (5 consecutive fiscal periods).

The transition to accounting is not handled solely by accounting software. It is often necessary to review contracts, receivables, payables, assets, and any potential change in legal form as well. Our lawyers will advise you on everything you need to keep an eye on.

Summary

Tax records primarily track actual income received, expenses paid, assets, and debts, and are therefore typically suitable for smaller self-employed individuals with simpler business operations. Accounting tracks expenses and revenues in the period to which they relate and provides a more detailed picture of assets, liabilities, and net income. They are required to maintain accounting records, in particular, legal entities, self-employed individuals registered in the Commercial Register, and entrepreneurs who meet the statutory turnover threshold. Being a VAT payer does not in itself create an obligation to maintain accounting records. When making the transition, it is necessary to conduct an inventory, determine opening balances, and correctly account for the tax implications of inventory, receivables, payables, and prepayments. A voluntary transition is particularly worthwhile when a business is growing, utilizing loans, employing more people, or needing to submit credible financial statements to a bank or investor.