New Zealand Immigration Points Calculator

At very 1st place one have to do self assessment like calculate your points through New Zealand immigration Point System.
The New Zealand Skilled Migrant points system is designed to allow Expressions of Interest to be ranked in order so that the New Zealand Immigration authorities can make invitations to apply for residence to those migrants who can offer the most in economic growth and other factors to New Zealand. This visa isn’t designed for people who are self-employed. If you want to work in your own business, you may wish to apply for an Entrepreneur Resident Visa instead.
Points are awarded for age, having family members in New Zealand, applicant’s employment, previous work experience, and qualifications. You will need to meet the minimum threshold of 100 points to be able to lodge an Expression of Interest. But currently, they are only selecting EOIs with 160 points or above.

Age	Points
20-29	30
30-39	25
40-44	20
45-49	10
50-55	5

Family

Applicant can gain 10 points for having close family already living in New Zealand.

Current Employment or Offer of Employment	Points
Having a job offer in New Zealand	50
Currently working in a skilled job in New Zealand for less than 1 year	50
Currently working in a skilled job in New Zealand for more than 1 year	60

Employment bonus points

Current Employment or Offer of Employment	Points
In an identified future growth area	10
In an area of absolute skills shortage	10
In a region outside Auckland	30
Partner/spouse has a skilled job or job offer.	20

Work experience in skilled employment

Duration	Points
2 years	10
4 years	15
6 years	20
8 years	25
10 years	30

Bonus points for work experience in New Zealand

Duration	Points
1 years	5
2 years	10
3 years	15

Bonus Points For Work Experience In An Identified Future Growth Area

Duration	Points
2-5 years	10
6 years +	15

Bonus Points For Work Experience In An Area Of Absolute Skills Shortage

Duration	Points
2-5 years	10
6 years +	15

Qualifications

Qualification Level	Points
4-6 (such as a trade qualification or diploma)	40
7-8 (such as a Bachelor's degree)	50
9-10 (such as a Master's degree or doctorate)	60

Bonus Points For Qualifications

Qualification	Points
2 years full-time study in New Zealand completing a Bachelor’s degree	10
1 year of full-time study in New Zealand completing a post-graduate degree	10
2 yeara of full-time study in New Zealand completing a post-graduate degree	15
Qualification in an identified future growth area	10
Qualification in an area of absolute skills shortage	10
Partner/spouse holds a level 4-6 qualification	10
Partner/spouse holds a level 7 qualification or higher	20

After the proper assessment and calculation of points one must have to submit an Expression of Interest.
To submit an Expression Of Interest there are two options
First note the fees and office information
Or
Submit an EOI online
After this If you have 160 points or more you'll be selected from the EOI pool and may be sent an ITA and this is the stage where applicant receive an Invitation to Apply (ITA).
Then submit a resident application and if its successful applicant will be issued a resident visa.
Benefits of this visa are:

Live, work and study in New Zealand.
Include your partner, and dependent children aged 24 and under, in your residence application.