नियत तारीख कल है और विलंब शुल्क ज़्यादा है।

Literally, नियत तारीख means fixed date or set date.

• नियत = fixed, appointed, निर्धारित
• तारीख = date

Together, they are commonly understood as due date, especially in formal or administrative language.

A few notes:

• नियत तारीख sounds fairly formal.
• In very formal contexts, you may also see देय तिथि.
• In everyday speech, people may also use phrases like आख़िरी तारीख depending on context, though that can mean last date / deadline rather than exactly due date.

Because Hindi often uses the present form है for scheduled or fixed facts about the future.

So नियत तारीख कल है is completely natural and works like English:

• The due date is tomorrow.
• The meeting is tomorrow.
• Exam tomorrow है is also very common in casual speech.

In other words, Hindi does not always need a separate future verb form when the time word already makes the future clear.

कल can mean either yesterday or tomorrow. Hindi relies on context.

In this sentence, the intended meaning is tomorrow because:

• a due date being tomorrow is a natural interpretation
• the overall message is about an upcoming deadline and a late fee

If the context were different, कल could just as easily mean yesterday.

Learners often find this strange at first, but native speakers usually have no trouble because the surrounding situation makes it clear.

The sentence has two separate clauses joined by और:

• नियत तारीख कल है
• विलंब शुल्क ज़्यादा है

Each clause has its own subject and its own is, so each one takes है.

This is very normal in Hindi. English also often repeats the verb in the same kind of structure:

• The due date is tomorrow and the late fee is high.

You could sometimes omit repeated material in casual speech if the meaning is obvious, but the full version with both है forms is the standard and clearest way.

Because each clause has a singular subject:

• नियत तारीख = singular
• विलंब शुल्क = singular

So each clause takes singular है.

Compare:

• नियत तारीख कल है।
• नियत तारीखें कल हैं। = The due dates are tomorrow.

And:

• विलंब शुल्क ज़्यादा है।
• विलंब शुल्क ज़्यादा हैं would usually not work, because शुल्क here is being treated as a singular fee/charge.

विलंब शुल्क is a formal compound meaning late fee.

Parts:

• विलंब = delay
• शुल्क = fee, charge

So literally it is something like delay fee.

This is a formal, official-sounding phrase. In more casual Hindi, people might say things like:

• लेट फीस
• देरी का शुल्क
• लेट फ़ी

But विलंब शुल्क is perfectly good standard Hindi, especially in notices, forms, schools, and offices.

Yes, ज़्यादा often means more, but it can also mean a lot, too much, or high depending on context.

In विलंब शुल्क ज़्यादा है, it means the late fee is high or large.

So ज़्यादा is flexible:

• ज़्यादा पैसा = more money / a lot of money
• दाम ज़्यादा है = the price is high
• शुल्क ज़्यादा है = the fee is high

A more formal alternative would be अधिक, but ज़्यादा is very common and natural.

Yes, Hindi word order is somewhat flexible, as long as the sentence remains clear.

These are both possible:

• नियत तारीख कल है
• कल नियत तारीख है

The difference is mostly about emphasis:

• नियत तारीख कल है puts the focus first on the due date
• कल नियत तारीख है puts tomorrow first, often giving it a little more emphasis

Both are understandable. The version you were given sounds natural and straightforward.

Yes, तारीख is feminine.

However, not all Hindi adjectives change form. नियत is the kind of adjective that usually stays the same, so you do not see a masculine/feminine change here.

Compare this with an adjective that does change:

• अच्छा दिन
• अच्छी तारीख

But with नियत, the form stays नियत:

• नियत दिन
• नियत तारीख

So the lack of change is normal.

Yes, शुल्क is a tricky word for learners.

A rough pronunciation guide:

• नियत = ni-yat
• तारीख = taa-reekh
• विलंब = vi-lamb
• शुल्क = roughly shulk

About शुल्क:

• The cluster शुल्
  • क makes it compact.
• Many learners want to insert an extra vowel, but standard pronunciation keeps it short and tight: shulk.

A rough full transliteration of the sentence is:

niyat tārīkh kal hai aur vilamb śulk zyādā hai

You do not need perfect Sanskrit-style pronunciation to be understood, but it helps to recognize शुल्क as a formal word you will often see in writing.

Yes, it sounds fairly formal, especially because of:

• नियत तारीख
• विलंब शुल्क

This kind of phrasing is common in:

• school notices
• payment reminders
• office communication
• forms and instructions

A more conversational version might sound like:

• ड्यू डेट कल है और लेट फीस ज़्यादा है।

So the original sentence is natural, but definitely on the more formal side.