What Not to Miss in the First Month
Accounting Checklist for Opening a Business
A few unrecorded transactions in the opening weeks can turn into a difficult mess to fix six months later. We've listed the steps to take in order.

The sign is up, the first sale is made, and the invoice is put off for "later." Six months later, current balances don't match, inventory is unknown, and the CPA asks for missing documents. Accounting for a business setup begins right after the incorporation paperwork.
This list compiles what a new taxpayer needs to check step-by-step in their first month, in practical language. It is not a legal formulation; it's a business owner's checklist.
1) Tax liability and identity information
- Is the tax office registration / company incorporation complete?
- Does the NACE (activity) code match your actual business?
- Is the workplace address, contact info, and email up to date with the Revenue Administration / e-Government?
- Have the CPA agreement and authorization / intermediary user definitions been made?
A wrong NACE code can cause issues later on, ranging from incentives to VAT applications. The NACE code article clarifies this step.
2) Document and e-document infrastructure
- Has the financial seal or e-signature application been made? (Delivery time can delay your launch.)
- Have e-Invoice / e-archive needs or the obligation threshold been evaluated?
- Has a decision been made between the portal or an integrator?
- Are invoice series, logo, and description templates ready?
Ensuring your document channel is operational before your first sale prevents the "I made the sale but the invoice will come later" chaos.
3) Basic pre-accounting framework (Day one)
- Open cash and bank accounts. Do not mix your business account with your personal account.
- Record opening balances. Capital put into the cash register, amount deposited in the bank, and starting inventory if any.
- Create essential current accounts. Your first suppliers and first customers.
- Open product / service cards. Select the correct VAT rate and unit price.
- Keep expense categories simple. A few categories like rent, payroll, shipping, and general.
Without this framework, every transaction turns into an "Excel note." The sole proprietorship first steps article also accompanies this period.
4) First-month routines
| What | How often | Why |
|---|---|---|
| Sales document | Transaction day | Not to miss deadlines |
| Expense / receipt recording | At least weekly | Prevent pile-ups in the glove box |
| Bank reconciliation | Weekly | Keep cash and bank balanced |
| CPA sharing | 3–5 days before month-end | Prevent tax return panic |
5) Costly mistakes when skipped
- Not recording money spent out of the partner's pocket (capital / debt gets mixed up).
- Starting an inventory-based business without taking a count.
- Not knowing the rent withholding tax / withholding calendar.
- Leaving the onboarding and payroll process for later if you have employees.
- Not inquiring about young entrepreneur / incentive rights.
Frequently asked questions
Can you make sales without issuing an invoice in the first month?
If there is a sale, the document obligation arises. "We just opened" does not create an exception. Prepare your document channel before making sales.
Is starting with Excel wrong?
It can work temporarily for very low volumes; once current accounts + inventory + e-documents come together, it quickly breaks down. For transition signs, check out the transition from Excel to software article.
Ledger-declaration or e-ledger, which one applies to me?
It depends on the business type, method, and limits. Your CPA should clarify this upon setup; you still set up your daily pre-accounting order.
How is the initial inventory recorded?
Opening inventory + purchase documents. Starting with undocumented "goods on hand" magnifies future count discrepancies.
In short: setup accounting doesn't begin when paperwork ends, but before the first sale. Complete this list in the first month so you don't have to fix chaos six months later.
By opening a free account on Qolay.App, you can set up your cash, current accounts, inventory, and e-document order from day one.
This article is for general informational purposes only. Tax liabilities, e-document obligations, and bookkeeping methods vary periodically and by business; consult your CPA for your specific situation.
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