Last Updated on June 20, 2026 by I Love Spanish Club
One of the most common spelling challenges in Spanish — even for native speakers — is knowing when to write B or V. Unlike English, where B and V sound completely different, in Spanish both letters produce almost exactly the same sound. This guide covers all the rules you need to spell correctly and stop second-guessing yourself every time you write a word with B or V. ¡Vamos a practicar! (Let’s practice!)
🔊 How Do B and V Sound in Spanish?
This is the key fact that surprises most learners: B and V are pronounced almost identically in Spanish. Both produce a soft bilabial sound — somewhere between the English B and V — depending on where they appear in a word.
At the beginning of a word or after M/N: Both B and V produce a firm stop sound, similar to English B.
banco, vaca, ambiente, enviar
Between vowels or between a vowel and a consonant: Both produce a soft sound where the lips barely touch.
saber, uva, cubrir,over
Because they sound the same, Spanish has spelling rules to help you know which letter to use. Let’s go through them.
📝 Rules for Writing B (be)
1. Before L and R
Always use B before L or R (bl, br combinations).
| Spanish | English |
|---|---|
| blanco | white |
| brazo | arm |
| blusa | blouse |
| brillo | shine / brightness |
| biblioteca | library |
2. After M
Always use B after M.
| Spanish | English |
|---|---|
| también | also / too |
| cambio | change |
| ambiente | atmosphere / environment |
| embarazada | pregnant |
3. Verbs ending in -bir
All verbs ending in -bir are written with B (except hervir, servir, vivir).
| Spanish | English |
|---|---|
| escribir | to write |
| recibir | to receive |
| describir | to describe |
| prohibir | to prohibit |
4. Imperfect tense of -AR verbs and the verb IR
The imperfect tense endings -aba, -abas, -aba, -ábamos, -abais, -aban are always written with B.
| Spanish | English |
|---|---|
| hablaba | I/he/she was speaking |
| caminábamos | we were walking |
| iba | I/he/she was going |
| ibas | you were going |
5. Words beginning with bi-, bis-, biz- (meaning two)
| Spanish | English |
|---|---|
| bilingüe | bilingual |
| bicicleta | bicycle |
| bisabuelo | great-grandfather |
📝 Rules for Writing V (uve)
1. After N
Always use V after N.
| Spanish | English |
|---|---|
| invierno | winter |
| enviar | to send |
| investigar | to investigate |
| convencer | to convince |
2. Adjectives ending in -ava, -ave, -avo, -eva, -eve, -evo, -iva, -ivo
| Spanish | English |
|---|---|
| nuevo / nueva | new |
| activo / activa | active |
| suave | soft / smooth |
| breve | brief / short |
| octavo | eighth |
3. Verb forms of ir, estar, andar, tener in the preterite
| Spanish | English |
|---|---|
| estuve, estuviste, estuvo | I/you/he was (preterite of estar) |
| anduve, anduviste | I/you walked (preterite of andar) |
| tuve, tuviste, tuvo | I/you/he had (preterite of tener) |
💬 Real Conversation: B and V in Action
📍 Two friends studying together
Ana: Oye, ¿cómo se escribe “también”? ¿Con B o con V?
Hey, how do you write “también”? With B or V?
Luis: Con B — recuerda, después de M siempre va B. También, cambio, ambiente…
With B — remember, after M it’s always B. También, cambio, ambiente…
Ana: ¡Ah, cierto! ¿Y “invierno”?
Oh right! And “invierno”?
Luis: Esa va con V — después de N siempre es V. Invierno, enviar, investigar…
That one uses V — after N it’s always V. Invierno, enviar, investigar…
Ana: ¡Perfecto! Ahora sí lo entiendo. ¡Gracias!
Perfect! Now I understand it. Thanks!
⚠️ Common Mistakes
❌ “inbierno” / “imbiar”
✅ invierno / enviar — after N, always V.
❌ “tamvién” / “camvio”
✅ también / cambio — after M, always B.
❌ “escrivir” / “recivir”
✅ escribir / recibir — verbs ending in -bir use B.
❌ “hablava” / “caminava”
✅ hablaba / caminaba — imperfect -AR endings always use B.
🎯 Quiz: B or V?
Fill in the blank with B or V:
- tam___ién
- in___ierno
- escri___ir
- nue___o
- ___lanco
- am___iente
- estu___e (preterite of estar)
- habla___a (imperfect)
👁️ Show Answers
- también — after M = B
- invierno — after N = V
- escribir — verb ending -bir = B
- nuevo — adjective ending -evo = V
- blanco — before L = B
- ambiente — after M = B
- estuve — preterite of estar = V
- hablaba — imperfect -AR = B
❓ Frequently Asked Questions
Do native Spanish speakers also confuse B and V?
Yes! B and V is one of the most common spelling mistakes even among native Spanish speakers, because both letters sound identical. Many native speakers have to consciously apply the rules when writing formal documents, emails, or academic work. You’re not alone in finding this tricky.
Is there any difference in pronunciation between B and V in any Spanish dialect?
In standard modern Spanish — across all countries — B and V are pronounced identically. Some historical and regional variations exist, but they are extremely rare. Don’t worry about trying to differentiate them in speech — focus on spelling rules instead.
What’s the fastest way to memorize the B and V rules?
Focus on the two most useful rules first: after M = B and after N = V. These two rules cover a huge number of common words. Then memorize the imperfect -aba endings and the -bir verbs. Practicing with a native tutor on Italki — writing sentences and getting them corrected in real time — is one of the most effective ways to make these rules automatic.