When starting a business, many people ask: "Should I do the bookkeeping myself, or hire an accounting firm?" There is no fixed answer, because it depends on the size of the business, the complexity of its tax and bookkeeping, the time available, and the expertise of the person doing the books. Choosing wrongly, filing incorrectly, or submitting even a slightly wrong document can lead to fines or lost tax-saving opportunities. This article will give you a clear picture of which option is "more worthwhile" and "a better fit", explaining every aspect in detail so you can decide with confidence and precision.
What Is DIY Bookkeeping vs Hiring an Accounting Firm?
Doing your own bookkeeping (Do It Yourself – DIY) means the business owner or an in-house employee takes on the job of recording the books, keeping the accounts, filing documents, preparing reports and filing monthly/annual tax returns, possibly with the help of online accounting software such as FlowAccount, Peak, Zyflow and so on. The monthly cost of bookkeeping is lower, but it carries the time cost of the person doing it; a monthly bookkeeping service fee, by contrast, is clear and fixed; the tax risk is high if you are not an expert.
Hiring an accounting firm
This means assigning an accounting firm or professional accountant to handle everything on your behalf: receiving documents, keeping the books, recording entries, preparing tax reports, filing taxes, closing the financial statements, and advising on tax/legal matters. In some cases the accounting firm also checks for irregular documents and recommends legitimate ways to save tax. This makes the bookkeeping low-risk, because an expert helps check it. Time saving: doing it yourself saves little, as you must do every step yourself; hiring saves the maximum time. Accuracy of data: doing it yourself depends on the experience of the person doing it; hiring passes through several layers of review. Handling complex tax elements (VAT, withholding tax): doing it yourself means studying it all; the firm handles everything. Tax/legal advice: none when doing it yourself; included free in most packages. Supporting business growth: doing it yourself gets heavier the more you grow; the firm has a clear system and can scale up the bookkeeping workload.
In-depth analysis, factor by factor
1) Actual costs (including hidden costs)
★ Doing it yourself: the costs many people overlook include the monthly accounting software fee, the business owner's time cost, learning costs (courses/books), fines for incorrect filing, late filing or wrong entries, and the cost of fixing the system retroactively (where the bookkeeping has gone badly wrong). These figures are "not zero", and they tend to creep up without you noticing.
★ Hiring an accounting firm: the monthly service fee is clear, e.g. 1,500 – 3,000 baht/month for a small business with few transactions, 3,000 – 10,000 baht/month for a business with many transactions/employees, and a year-end close fee of 5,000–20,000 baht per year (depending on size and complexity). These fees cover bookkeeping, tax filing, summary reports and advice. Compared with the fine from a single mistake, in many cases "hiring is cheaper".
2) Tax complexity and the risk of errors. Doing it yourself → the risk is higher, because Thai tax comes in many types, such as VAT, withholding tax, P.N.D.1, 2, 3, 53, P.P.30, social security and year-end tax. An incorrect filing, incomplete documents, or a date that is wrong by just 1 day can lead to fines in the thousands to tens of thousands of baht. Hiring an accounting firm → removes almost all of the risk.
This is because there is a bookkeeper + a reviewer, a tax deadline reminder system, an expert to check that the documents are correct before filing, and up-to-date knowledge of the Revenue Department's latest requirements.
3) Time = a bookkeeping cost many people do not count
For a business owner, 1 hour is worth a lot. You could spend it on marketing, closing sales, business planning or creating new products, but sitting down to sort documents, file taxes or troubleshoot accounting software takes time away from "more important work". Doing it yourself takes 5–20 hours/month; if you value your time at 300 baht per hour → that is 1,500–6,000 baht lost per month. Hiring an accounting firm gives all that time back to the business owner, so the value you get back is very high.
4) Bookkeeping knowledge and skills
Bookkeeping is not just recording numbers; you need to understand document types, each kind of tax, how to post entries, the profit and loss statement, the statement of financial position, accounting standards and the relevant laws. Without that foundation it can take a very long time, and mistakes come easily. Hiring an accounting firm helps interpret the numbers for you and lets you understand your business through the financial statements.
It also lets you put the accounting data to real use in planning, such as where to cut costs, whether real profit is better than cash flow, and how much tax to set aside this year.
5) Continuity and support for growth
Doing it yourself: as the business grows, with more transactions and more staff, the accounting work grows exponentially, and in the end you may have to find a bookkeeper or an accounting firm anyway. Hiring an accounting firm supports growth well, because it has a team, a system and a scalable service structure, so you can change package as your transactions increase. Example case studies:
Case A: a small online shop (20–50 transactions/month). If you have the time and the business is not complex → you can do it yourself; it is more worthwhile, but you need cloud accounting software + discipline in organising documents.
Case B: a restaurant/shop with 3–10 employees. A business like this has staff (payroll/social security to handle), buys every day, sells every day, and in some cases has VAT → hiring an accounting firm is definitely more worthwhile.
Case C: a company that needs important documents, e.g. presenting financial statements, applying for loans, or having investors, needs well-presented, credible financial statements and may need an auditor → hiring an accounting firm is the only option.
A Simple Summary on Bookkeeping
✔ Doing it yourself is "more worthwhile" if:
The business is very small, with few transactions, no employees and no VAT; you have time to learn and the discipline to organise documents; and you do not use much accounting data. ✔ Hiring an accounting firm is "more worthwhile" if: you want to reduce tax risk; you have no time to do it yourself; you have employees / VAT / a complex business; you want tax advice; you want systematic, accurate, auditable accounts; or the business is starting to grow and needs documents for loans/investors.
Further Advice: How to Choose an Accounting Firm for the Best Value
1. Ask for a quotation with a clear scope of work
2. Ask how many transactions per month the package covers
3. Check their bookkeeping experience in your industry
4. Look at how consistently they deliver reports/tax reports
5. Look at reviews and past work
6. Transparency and systematic document storage
7. A team that gives advice and answers questions quickly
An investment, not an expense
Get to Know YMTD Accounting Partner
YMTD is an accounting firm and financial/tax adviser based in Chiang Mai, providing a "full-service" offering for businesses of every size, whether you are just starting out or have a business with some complexity.
The YMTD team are "professional accountants (CPAs or qualified to professional standards)" with experience looking after the accounts and taxes of many types of business.
YMTD's services are not just "bookkeeping/tax filing" but also cover tax planning, preparing financial statements (trial balance, monthly/annual financial statements), company registration, looking after the accounting system, and post-registration services.
Strengths / What Makes YMTD Worth Considering
1. Full-service bookkeeping (one-stop service)
If you are starting a new business, YMTD can handle "company registration + tax ID/VAT registration + social security registration (if you have employees)" all in one place.
If the business is already running, there are regular bookkeeping, tax filing, year-end close, compliance checks and tax planning services, suited to businesses that want "professionals looking after the whole system" without setting up their own accounting department.
2. A professional team & bookkeeping expertise in many areas
The team knows accounting standards and tax law and has experience looking after many types of business, which reduces the chance of "errors" in both bookkeeping and tax filing.
They are flexible in designing services to fit the "size and nature of the business", from small businesses to medium-sized businesses and complex ones.
3. Tax planning & advice, which adds more value than bookkeeping alone
YMTD offers a "tax planning" service that analyses the structure of income and expenses so that you pay the correct tax but "not more than necessary" (legal tax optimisation), something business owners may overlook when doing it themselves. The advisory service lets you focus on the core of your business, while YMTD looks after the accounting/tax work, reducing the burden of documents, systems and compliance.
4. Suited to businesses that want "professional care" without setting up their own accounting department
If you do not want to spend time studying tax and accounting yourself, or have no full-time accounting staff, YMTD is an option that fully reduces both your time burden and your risk.
As the business starts to grow, with employees, several types of buying and selling, and several kinds of tax, having a CPA team keep the books systematically improves "financial/tax stability" in the long run.
"Who" Should Use YMTD's Accounting Service: Business Type / Situation and Reasons to Use YMTD
Startups / new businesses that need to register a company: YMTD looks after you from the start with company registration / VAT registration / social security / a complete accounting system. Business owners who do not want to spend time doing the books themselves: reduces the burden of documents, compliance and tax filing. Businesses with employees, many transactions, VAT / withholding tax / complex taxes: a professional team looks after you and reduces the risk of errors. Businesses that want to grow, or need investors / loans / professionally prepared financial statements: you get accurate, credible financial statements and tax filings. Owners who want advice / tax planning / long-term financial planning: YMTD offers complete advisory and planning services.
What to Check Before Deciding on an Accounting Service
When you are interested in YMTD (or any accounting firm), do not forget to: ask for a clear scope of service, whether the bookkeeping covers only basic accounts, tax filing and financial statements, or also includes advice/tax system setup; ask for a fee schedule based on document volume and number of employees so you can assess the real cost (a small business with few transactions vs. a large business with many transactions will likely pay different fees); ask what the "back-office service" is like (data backup, report delivery, contact with the tax authorities, and communication channels with the accounting team); and check that the team has professional qualifications / licensed accountants (CPA) so you can be confident the accounting and tax work meets the standards.
