# Alphanumeric CNPJ

As of **July 2026**, the Brazilian Federal Revenue Service (Receita Federal) may issue new CNPJ registrations in an **alphanumeric format** (letters and numbers). Existing registrations will **not** be changed.

The **CNPJ.ws API** is already prepared for this new format and accepts queries using **alphanumeric CNPJ**.

### Check Digit Calculation

The new alphanumeric CNPJ is composed of **14 characters**, just like the current one:

* The **first 12 characters** are alphanumeric
* The **last 2 characters** are numeric **check digits**

The check digits are calculated from the first twelve characters in **two steps**, using **modulus 11** and weights distributed from **2 to 9**.

#### First Check Digit Calculation

For each CNPJ character, you must assign the value from the **“Value for check digit calculation”** column according to the table below, or subtract **48 from the ASCII value**:

| Alphanumeric CNPJ | ASCII Value | Value for Check Digit Calculation |
| ----------------- | ----------- | --------------------------------- |
| 0                 | 48          | 0                                 |
| 1                 | 49          | 1                                 |
| 2                 | 50          | 2                                 |
| 3                 | 51          | 3                                 |
| 4                 | 52          | 4                                 |
| 5                 | 53          | 5                                 |
| 6                 | 54          | 6                                 |
| 7                 | 55          | 7                                 |
| 8                 | 56          | 8                                 |
| 9                 | 57          | 9                                 |
| A                 | 65          | 17                                |
| B                 | 66          | 18                                |
| C                 | 67          | 19                                |
| D                 | 68          | 20                                |
| E                 | 69          | 21                                |
| F                 | 70          | 22                                |
| G                 | 71          | 23                                |
| H                 | 72          | 24                                |
| I                 | 73          | 25                                |
| J                 | 74          | 26                                |
| K                 | 75          | 27                                |
| L                 | 76          | 28                                |
| M                 | 77          | 29                                |
| N                 | 78          | 30                                |
| O                 | 79          | 31                                |
| P                 | 80          | 32                                |
| Q                 | 81          | 33                                |
| R                 | 82          | 34                                |
| S                 | 83          | 35                                |
| T                 | 84          | 36                                |
| U                 | 85          | 37                                |
| V                 | 86          | 38                                |
| W                 | 87          | 39                                |
| X                 | 88          | 40                                |
| Y                 | 89          | 41                                |
| Z                 | 90          | 42                                |

Example:

<table data-full-width="false"><thead><tr><th width="84">CNPJ</th><th width="55">1</th><th width="55">2</th><th width="57">A</th><th width="56">B</th><th width="56">C</th><th width="55">3</th><th width="56">4</th><th width="55">5</th><th width="56">0</th><th width="55">1</th><th width="56">D</th><th width="56">E</th></tr></thead><tbody><tr><td>Value</td><td>1</td><td>2</td><td>17</td><td>18</td><td>19</td><td>3</td><td>4</td><td>5</td><td>0</td><td>1</td><td>20</td><td>21</td></tr></tbody></table>

Distribute the weights from **2 to 9**, from **right to left** (restarting after the eighth character), as shown below:

<table data-full-width="false"><thead><tr><th width="84">CNPJ</th><th width="55">1</th><th width="55">2</th><th width="57">A</th><th width="56">B</th><th width="56">C</th><th width="55">3</th><th width="56">4</th><th width="55">5</th><th width="56">0</th><th width="55">1</th><th width="56">D</th><th width="56">E</th></tr></thead><tbody><tr><td>Value</td><td>1</td><td>2</td><td>17</td><td>18</td><td>19</td><td>3</td><td>4</td><td>5</td><td>0</td><td>1</td><td>20</td><td>21</td></tr><tr><td>Weight</td><td>5</td><td>4</td><td>3</td><td>2</td><td>9</td><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td></tr></tbody></table>

Multiply the value by the weight for each column and sum all results:

<table data-full-width="false"><thead><tr><th width="84">CNPJ</th><th width="55">1</th><th width="55">2</th><th width="57">A</th><th width="56">B</th><th width="56">C</th><th width="55">3</th><th width="56">4</th><th width="55">5</th><th width="56">0</th><th width="55">1</th><th width="56">D</th><th width="56">E</th></tr></thead><tbody><tr><td>Value</td><td>1</td><td>2</td><td>17</td><td>18</td><td>19</td><td>3</td><td>4</td><td>5</td><td>0</td><td>1</td><td>20</td><td>21</td></tr><tr><td>Weight</td><td>5</td><td>4</td><td>3</td><td>2</td><td>9</td><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td></tr><tr><td>Product</td><td>5</td><td>8</td><td>51</td><td>36</td><td>171</td><td>24</td><td>28</td><td>30</td><td>0</td><td>4</td><td>60</td><td>42</td></tr></tbody></table>

`5 + 8 + 51 + 36 + 171 + 24 +28 + 30 + 0 + 4 + 60 + 42 = 459`

Obtain the remainder of the division of the sum by **11**.\
If the remainder is **0 or 1**, the first check digit is **0**.\
Otherwise, the first check digit is **11 − remainder**.

In this example:\
Remainder of `459/11 = 8`, so the first check digit is `3` (result of `11-8`)

#### Second Check Digit Calculation

To calculate the second check digit, append the **first check digit** to the end of the CNPJ, forming **13 characters**, and repeat the same steps used for the first digit.

<table data-full-width="false"><thead><tr><th width="84">CNPJ</th><th width="55">1</th><th width="55">2</th><th width="57">A</th><th width="56">B</th><th width="56">C</th><th width="55">3</th><th width="56">4</th><th width="55">5</th><th width="56">0</th><th width="55">1</th><th width="56">D</th><th width="56">E</th><th width="56">3</th></tr></thead><tbody><tr><td>Value</td><td>1</td><td>2</td><td>17</td><td>18</td><td>19</td><td>3</td><td>4</td><td>5</td><td>0</td><td>1</td><td>20</td><td>21</td><td>3</td></tr><tr><td>Weight</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>9</td><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td></tr><tr><td>Product</td><td>6</td><td>10</td><td>68</td><td>54</td><td>38</td><td>27</td><td>32</td><td>35</td><td>0</td><td>5</td><td>80</td><td>63</td><td>6</td></tr></tbody></table>

`6 + 10 + 68 + 54 + 38 + 27 + 32 + 35 + 0 + 5 + 80 + 63 + 6 = 424`

Remainder of `424/11 = 6`, so the second check digit is **5** (result of `11 − 6`).

Final result: `12.ABC.345/01DE-`<mark style="color:red;">`35`</mark>


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