Capitaale: a tool for flat-tax entrepreneurs who invoice abroad

One of the most common pain points for Serbian flat-rate entrepreneurs is tracking the six-million-dinar annual limit in real time. Every invoice changes the number, but most founders rely on a spreadsheet, a monthly report from their accountant, or a rough estimate. Getting that wrong is expensive.

Capitaale is an app built specifically for this problem. It targets entrepreneurs who invoice foreign clients, work in multiple currencies, and manually track who owes what and how much headroom remains before the limit.

Four concrete problems Capitaale solves

1. You do not know how much room is left before the limit

The six-million-dinar threshold depends on invoices collected in the last 365 days. Every new payment shifts the percentage. If you track it manually, you will notice the yellow zone late—and the breach even later.

Capitaale tracks the limit live and shows the exact percentage used every day. No waiting for a monthly report. The number is always there.

2. The bank rate is quietly cutting every EUR payment

When you collect a euro-denominated invoice, the bank converts at its own rate, not the NBS rate. The difference between the two directly reduces your income. Many entrepreneurs do not know how much that gap costs them each year.

Capitaale shows your real RSD balance at the bank rate alongside the NBS rate for comparison. You see exactly what each conversion cost.

3. One client represents more than 70% of your revenue

Serbia's independence test has nine criteria. Criterion six says: if a single client accounts for 70% or more of your income over 12 months, the relationship starts to resemble an employment arrangement rather than independent business. Most flat-tax entrepreneurs do not track this because they have no tool for it.

Capitaale calculates each client's percentage share and warns you when one client crosses 50%—while you still have time to act. By the time you hit 70%, you cannot restructure the revenue for that period retroactively.

4. An invoice in EUR or USD takes more than five minutes

Every new invoice means finding the last one to get the number, looking up the client details, the bank account, the currency. Then attaching the PDF to an email and waiting for a payment confirmation.

In Capitaale, you pick a client and a currency and click. The system adds the correct invoice number and banking details automatically, and sends the PDF. The whole process takes under sixty seconds.

Monthly contributions you cannot forget

Flat-tax entrepreneurs must pay four obligations every month: PIO, ZDR, NZS, and income tax. Each has a deadline and a reference number. Missing a payment triggers interest and issues with the Tax Administration.

Capitaale sends reminders five days before each deadline, with all the payment details. No manual calendar setup or hoping you will remember.

The limit does not end at six million

Once turnover crosses eight million dinars in twelve months, VAT registration becomes mandatory. That is a separate threshold, separate from the flat-tax limit, and one that many entrepreneurs do not track.

Capitaale monitors that threshold too and alerts you as you approach it. Transitioning to VAT is always better planned than discovered.

Capitaale and Top14: two sides of the same system

Top14 covers the business address, mail intake, and registration documentation. Capitaale covers the financial side: income tracking, invoicing, and tax obligations.

For a founder who invoices abroad and uses a virtual office, this combination covers two of the most common areas where time and energy are lost: address administration and financial tracking.

Capitaale has a seven-day free trial with no credit card required. If you track a flat-tax limit, work with foreign clients, and issue invoices in EUR or USD, it is worth trying.

→ Try Capitaale free for 7 days No credit card required - Cancel any time - Special link for Top14 clients

If the topic of tax category and address is relevant to you, read Entrepreneurs, flat-rate tax, and when a virtual office fits.