Llevo guardados todos los tickets del mes por si tengo que pedir alguna devolución.

Yes, llevar often means to carry / to take / to wear, but it also has a very common extended use in Spanish.

In llevo guardados todos los tickets, llevar + past participle/adjective means something like:

• to have kept
• to have been keeping
• to keep and still have in that state

So llevo guardados todos los tickets suggests:

• I’ve kept all the receipts
• and I still have them saved/kept now

It emphasizes the resulting state of the receipts: they are still kept.

This is different from simply saying he guardado todos los tickets, which just states the action of having saved them, without highlighting the current state as strongly.

Because guardados agrees with todos los tickets, which is:

• masculine
• plural

So:

• guardado = masculine singular
• guardada = feminine singular
• guardados = masculine plural
• guardadas = feminine plural

Here the sentence is treating guardados almost like an adjective describing the receipts: they are kept/saved.

That is why it matches tickets.

They are similar, but not identical.

• Guardo todos los tickets = I keep all the receipts / I usually keep all the receipts
• He guardado todos los tickets = I have kept / I have saved all the receipts
• Llevo guardados todos los tickets = I’ve got all the receipts kept / I’ve been keeping all the receipts and still have them

So llevo guardados gives a stronger idea of a current ongoing result.

It often sounds natural when someone is explaining a practical precaution:

• Llevo apuntadas todas las fechas = I’ve got all the dates written down
• Llevo preparadas varias copias = I’ve got several copies prepared

Del mes means of the month or more naturally from this month / for the month, depending on context.

So todos los tickets del mes means the receipts belonging to the relevant month — for example:

• all the receipts from this month
• all the receipts for the month

It narrows the meaning. Without del mes, it would mean all the receipts in general, which is much broader.

Yes, very commonly. In Spain, ticket is often used to mean a shop receipt, especially a small printed till receipt.

That said, you may also hear:

• recibo — often more like a bill, payment slip, or receipt in certain contexts
• factura — invoice
• comprobante — proof/receipt, though less everyday in Spain than in some other varieties

In everyday Spain Spanish, guardar el ticket is very normal when talking about returns.

Por si means in case.

So:

• por si tengo que pedir alguna devolución = in case I have to ask for/request a refund

It introduces a precaution: the speaker keeps the receipts as a safety measure.

A key point: por si is followed by a normal verb form, not by de.

Examples:

• Lleva paraguas por si llueve = Take an umbrella in case it rains
• Te llamo por si necesitas ayuda = I’m calling in case you need help

This is a very common learner question because English learners often expect something more complicated after in case.

In Spanish, after por si, you normally use the indicative, not the subjunctive:

• por si tengo que...
• por si llueve
• por si viene

So por si tengo que pedir alguna devolución is correct.

Compare:

• Llevo los documentos por si me los piden = I’m taking the documents in case they ask me for them

Even though the event is uncertain, por si usually takes the indicative because it refers to a possible future situation considered as realistic.

Yes. In Spain Spanish, pedir una devolución is natural and means to ask for a refund.

Other common options are:

• pedir que me devuelvan el dinero = ask for my money back
• hacer una devolución = make a return / return an item
• solicitar una devolución = request a refund (more formal)

A useful distinction:

• devolver = to return something
• devolución = return / refund
• pedir una devolución = to ask for a refund
• hacer una devolución = to return the item

Depending on context, devolución can focus on the act of return or on the refund itself.

Alguna here adds an indefinite, non-specific sense:

• alguna devolución = some refund / any refund / a refund of some kind

It sounds natural because the speaker does not know whether they will need one, or for which item.

Compare:

• pedir una devolución = ask for a refund
• pedir alguna devolución = ask for some refund(s), or ask for a refund in some case

In this sentence, alguna helps express uncertainty and possibility.

It suggests both, but especially the current state.

Llevo guardados often implies:

1. the person did the action over a period of time or as a continuing habit, and
2. the result is still true now

So the idea is:

• I’ve been keeping all the month’s receipts,
• and I still have them stored now.

The exact duration is not the main point; the main point is that they are currently available if needed.

Because those would express different ideas.

• llevo guardados = I have them kept / I’ve been keeping them and still have them
• he llevado guardados = much less natural here; it would sound unusual in this context
• estoy guardando = I am keeping / I am currently saving, focusing on the ongoing action right now

In this sentence, the speaker is not describing an action in progress at this exact moment. They are describing a practical situation they have already set up: the receipts are kept.

So llevo guardados is a very good fit.

Yes, a couple of things feel especially natural in Spain Spanish:

• tickets for shop receipts
• pedir una devolución in a shopping/consumer context

The overall sentence sounds very natural in Spain, especially in everyday conversation about purchases, returns, and keeping proof of purchase.

A native speaker in Spain would readily understand it as: keeping all the month’s receipts in case a refund needs to be requested.

Yes, absolutely. That sentence is correct and natural.

The difference is mainly nuance:

• He guardado... = I have kept/saved...
• Llevo guardados... = I’ve got them kept / I’ve been keeping them and still have them ready

So llevo guardados feels a bit more descriptive of the present state and slightly more vivid in context.

If you want the simplest version, He guardado todos los tickets del mes... works very well. If you want to emphasize that they are all still kept and available, Llevo guardados... is especially good.