Let's break down how these rates are formed, why there's always a gap between them, and how to use both in real life.

What the NBK official rate is

The official rate is the weighted average exchange rate from trading on KASE (the Kazakhstan Stock Exchange), fixed at the end of the morning session. The NBK (National Bank of Kazakhstan) publishes it around 11:00–12:00 on each working day and applies it:

• For accounting purposes — companies convert their foreign-currency transactions at the official rate.
• For tax calculations — customs payments, import VAT.
• For budget operations — government contracts, state bodies.
• For reporting — banks, insurance and investment companies.

The key point: no one actually buys or sells cash currency at exchange offices at the official rate. It's a technical benchmark for settlements, not a price at the till.

Source: nationalbank.kz, "Exchange Rates" section.

What the bank rate is

It's the actual buy and sell price of currency at a specific bank or exchange office. It consists of two numbers:

• The buy rate — how many tenge the bank will pay you for 1 unit of currency.
• The sell rate — how many tenge the bank will charge you for 1 unit of currency.

The sell rate is always higher than the buy rate. The gap between them is the spread, the bank's margin.

For example (illustrative numbers):

• NBK official rate: 463 KZT/USD
• Bank X: buy 461 / sell 466 (spread 5 KZT)
• Bank Y: buy 462 / sell 465 (spread 3 KZT)

All three numbers are "correct." They just play different roles.

Why the official rate and the bank rate differ

A few reasons:

1. The spread is how the bank earns. A bank holds cash currency, transports it under guard, pays rent and salaries. Its source of profit is the gap between the price it pays a client and the price it charges another.

2. Data freshness. The official rate is fixed once a day. Bank rates are updated several times a day — they react to live trading, till positions, and client flow.

3. Local risk. The bank prices into the spread the possibility of the rate moving in the next few hours — especially in a volatile market.

4. Transaction size. On small amounts the spread is wider (it costs the bank more, proportionally, to process small till transactions). On large amounts, banks are willing to narrow the spread.

On average, the gap between the official rate and the cash rate at a bank is:

• The sell rate — 1.5–3 tenge above the official
• The buy rate — 1.5–3 tenge below the official
• Total spread — 3–6 tenge on the dollar

Which rate is the "real" one

Both. They just answer different questions.

The official rate is for:

• the accountant (for reports)
• the tax officer (for calculations)
• the journalist (for the article)
• the investor (as a reference point)
• you — to understand the "normal" level of the rate, against which to read bank quotes

The bank rate is for:

• you — so you know the actual price at which you'll exchange your money
• businesses — for real settlements with counterparties through a bank
• retail outlets — to value their foreign-currency revenue

Use them together: treat the official rate as the "zero line" and the bank rate as the actual price. If the bank's sell rate is well above the official (say, by 5 tenge), the spread is wide — you can look for something better. If it's close to the official (1–2 tenge), the spread is very narrow — that's a good offer.

How to use both numbers in real life

Scenario 1: you're planning a large currency purchase

Open the NBK website (nationalbank.kz) and check the official rate. That's your benchmark for a "normal" price.

Open the live bank rates table (the widget above). Find banks whose sell rate is the smallest distance above the official — that's the best offer.

Scenario 2: you're selling a large amount of currency

Check the official rate as a reference.

Find banks with a buy rate as close as possible to the official — they offer the narrowest spread in your direction.

Scenario 3: you're receiving foreign-currency revenue

If you're a sole proprietor or LLP and receive a dollar transfer, the bank credits it to your foreign-currency account. When you sell the currency back to the bank (converting to tenge), the rate applied isn't the cash rate but the non-cash rate — usually closer to the official, with the spread already narrowed to 1–2 tenge.

Scenario 4: you want to check whether you've been short-changed

Calculate: sell rate minus buy rate = spread. Compare it against the market average:

• USD: typical 2–6 tenge
• EUR: typical 5–10 tenge
• RUB: typical 0.3–1.5 tenge
• CNY: typical 1.5–4 tenge

If an exchange office's spread is noticeably wider than the norm, it's a bad offer — look elsewhere.

Why the NBK rate changes every day

The official rate is the result of exchange trading on KASE. Every working day, banks and financial companies buy and sell currency on the exchange. The weighted average price of those deals becomes the official rate for the next day.

In other words, the rate reflects real trades, not a "policy decision" by the National Bank. The NBK doesn't "set" the rate — it records it based on trading results.

On weekends and holidays the exchange is closed — the official rate doesn't change. So Monday's rate = Friday's rate.

What the floating tenge rate means

Since 2015, Kazakhstan has operated under a free-floating tenge exchange rate regime. That means:

• The rate is set by the market (supply and demand on KASE), not by the state.
• The NBK does not target any specific rate level.
• The NBK can carry out FX interventions — buying or selling currency to smooth out sharp swings, but not to hold the rate at any particular level.

This sets Kazakhstan apart from countries with fixed rates (like the Gulf states) or a currency corridor.

In-bank rate vs. board rate

Another nuance: at most banks, the internal rates for different operations are different.

Board rate (cash) — for individuals exchanging at the till. The widest spread.

Non-cash rate — for account and card operations. Narrower spread.

Corporate rate — for large legal entities, on individual request. Minimal spread, sometimes within 1–2 tenge of the official.

Meaning: the same currency at the same bank can "cost" different amounts depending on the form of the operation. On large amounts that matters — sometimes a non-cash transaction is more advantageous.

Checklist

• you opened the NBK site (nationalbank.kz) and checked the official rate
• you opened the bank rates table above and checked the real prices
• you calculated the spread on the top offers (the norm for the dollar is 2–6 tenge)
• you chose a bank with a narrow spread and a convenient address
• remember: for accounting — the official rate; for an exchange at the till — the bank rate

Common mistakes

Treating the official rate as the "real" one. It's a technical benchmark, not the price at the till.

Waiting for a "rate move" until the official publication. Bank rates already reflect the current picture in the morning — the official rate is published later as a "photograph" of morning trading.

Comparing the cash rate to the official directly. You need to understand that the bank physically holds and guards the bills — that costs money. Compare a bank's rate against other banks, not against the NBK.

Ignoring the spread. On large amounts, the difference between a bank with a 2-tenge spread and one with a 5-tenge spread runs into tens of thousands of tenge.

Frequently asked questions

What is the NBK official rate? It's the weighted average exchange rate on KASE, published by the National Bank of Kazakhstan every day. It's used for accounting, taxes, and reporting.

Can I buy currency at the official rate? Physically — no. The actual price at the till is always higher than the official rate by the size of the spread.

Why does the bank sell more expensively than the NBK? The spread is the bank's earnings plus compensation for the risks and costs of handling cash currency.

What's the typical spread in Kazakhstan? For the dollar — 2–6 tenge. For the euro — 5–10 tenge. For the ruble — 0.3–1.5 tenge. For the yuan — 1.5–4 tenge.

Where is the official rate published? On the National Bank of Kazakhstan website (nationalbank.kz). It's also relayed by all major news portals and financial sites.

Why does the bank rate change throughout the day? Banks update the rate several times a day depending on the market situation. Unlike the official rate, which is fixed once.

Can I get a rate closer to the official one? On large non-cash operations — yes, banks are willing to give a custom rate. On cash, the spread is unavoidable.

The bottom line

The NBK official rate and the bank rate are different things for different jobs:

• The official rate — a reference point, a technical benchmark, the accounting standard.
• The bank rate — the actual exchange price for you.

Use both: the NBK to understand the "normal" level, the bank to know the specific price at the till. And remember: the narrower the spread at your chosen bank, the better the deal. Open the table above, look at the spread, and pick the best offer for today.