Regnskapsføreren forklarer bokføringsplikten så vel som skattemeldingen.

Regnskapsfører means accountant or bookkeeper (depending on context).

The ending -en makes it definite singular, so regnskapsføreren means the accountant / the bookkeeper.

This is very typical in Norwegian: instead of using a separate word like the, Norwegian usually adds the definiteness to the end of the noun.

• en regnskapsfører = an accountant
• regnskapsføreren = the accountant

For the same reason: Norwegian often puts definiteness on the noun itself.

• bokføringsplikt = bookkeeping obligation / duty to keep accounts
• bokføringsplikten = the bookkeeping obligation
• skattemelding = tax return / tax statement
• skattemeldingen = the tax return

So the sentence refers to specific things: the bookkeeping obligation and the tax return, not just those things in a general sense.

Forklarer is the present tense of forklare (to explain).

So:

• å forklare = to explain
• forklarer = explains / is explaining

In this sentence, Regnskapsføreren forklarer ... means The accountant explains ...

Så vel som means as well as.

So:

• bokføringsplikten så vel som skattemeldingen
  = the bookkeeping obligation as well as the tax return

It links the two noun phrases together. In this sentence, it means the accountant explains both of them.

This expression is a bit more formal or written-sounding than plain og (and).

Yes, in many contexts you can.

• Regnskapsføreren forklarer bokføringsplikten og skattemeldingen.

This would be more straightforward and very natural.

However, så vel som can sound slightly more formal and can add a nuance like as well as or both ... and. It draws a little more attention to the fact that both items are included.

Yes. A very natural alternative is:

• Regnskapsføreren forklarer både bokføringsplikten og skattemeldingen.

This means The accountant explains both the bookkeeping obligation and the tax return.

Compared with så vel som, både ... og makes the both meaning especially clear.

Because in Norwegian, definiteness is usually expressed with a suffix, not a separate article like English the.

So instead of saying something like the accountant, Norwegian says:

• regnskapsføreren

And instead of the tax return, Norwegian says:

• skattemeldingen

This is one of the biggest structural differences between English and Norwegian.

It is a compound noun, which is extremely common in Norwegian.

You can break it down like this:

• bokføring = bookkeeping
• plikt = duty / obligation
• bokføringsplikt = bookkeeping obligation
• bokføringsplikten = the bookkeeping obligation

The -s- in the middle is a linking s, which often appears in compounds. It does not usually have a meaning by itself; it just helps join the parts.

Because Norwegian often uses a linking s in compound nouns.

So:

• bokføring
  • plikt becomes
• bokføringsplikt

This -s- is very common in compounds, but it is not completely predictable in every case, so it is often best learned together with the whole word.

Usually, yes. In modern Norwegian usage, skattemelding is the official term for the document related to your taxes, and in many contexts it corresponds to tax return in English.

Literally:

• skatt = tax
• melding = message / report / statement

So skattemelding is something like tax statement/report, but tax return is often the most natural English translation.

No, this is normal Norwegian main-clause word order:

• Regnskapsføreren = subject
• forklarer = verb
• bokføringsplikten så vel som skattemeldingen = object phrase

So it follows the common pattern:

Subject + Verb + Object

That makes this sentence quite straightforward grammatically.

There is a small difference in emphasis.

• og = simple and
• så vel som = as well as, often a little more formal and slightly more emphatic

So the sentence suggests that the accountant explains the bookkeeping obligation, and also the tax return. It highlights that both are included.

In many everyday situations, though, the practical meaning is very close to and.

In Bokmål, these nouns are treated as common gender here, so their definite singular form ends in -en:

• regnskapsfører → regnskapsføreren
• bokføringsplikt → bokføringsplikten
• skattemelding → skattemeldingen

For learners, the main thing to notice is that -en is a very common definite ending for singular nouns in Bokmål.

Not by itself. The sentence simply says that the accountant explains both the bookkeeping obligation and the tax return.

There is no built-in comparison of quality or degree here. Så vel som just connects the two items.

Not always in the exact same sense. Depending on context, regnskapsfører can be translated as:

• accountant
• bookkeeper
• sometimes something like accounting professional

If the context is business, finance, or compliance, accountant is often a good general translation. But the exact English choice depends on what kind of work the person is doing.