I have been working in Texas from the beginning of 2015 and my payroll runs from Texas. My employer is in New Jersey. My state ID and my address( other than payroll) is in NY. My wife lives and works in NY too.

I worked for whole year , while my wife worked for only 5 months in 2015. According to my Payroll, there has been no state tax.

While filing tax, how should i file the tax to get less tax reduction?Should i file the tax in single or in combined? Do i have to pay tax to NY state and NY city too?

You live in NY and definetly you have to file for NY. NJ and NY may have some rules, if not you can deduct taxes paid in other nonresident state. Not sure now.
If you are married and file separately , there are more disadvantages than advantages, download 1040 instruction read it couple times it will help you understand what are we advising or talking.

You need to file NY state and NJ non resident return. Any taxes that you pay to NJ can be claimed as a out of state tax credit to NY state. So if you earned 100% of your income in NJ, you source all of your income to NJ and NY as well. The tax liability for the state of NJ can be claimed as credit to NY state.

Contact the below. They work for all the states tax filing and are very good. nepali ko ho, nepali nai kaam garne 6an, raamro sanga kaam gar6an, ma mero tyi baata file gar6u every year... They will give you a concrete and accurate answer.

Focus Financial & Consulting Services, Inc
Main Office (SF)
828 San Pablo Avenue
Suite 216 C
Albany CA 94706
Main:-415-735-7790

Branch Office (ATLANTA)
2865 Dresden Sq Drive
Chamblee, Georgia 30341
Branch:469-337-0662

Branch Office (LOS ANGELES)
17918 Pioneer Blvd Suite 204
Artesia CA 90701
Branch:-949-864-9762

ani hamro answer chahi concrete hoina? WTH

ho saathi ho... tapai ko pani ho... dhukka hunus... maatra euta professional ko contact address dieko... ani aafno experience share gareko, aru kehi haina... did not mean to insult your wisdom nor meant to ignore your education... chill out..

la thik cha teso bhaye. khukuri nikali sakya thiye

I will review it free.
You have to create an account with Tax-Act with fake name and fake social security with all other dollar infos correct. Next step.
You create new one and do exactly same as the fake with proper name and proper info.

Here is what I have done for the past 2 years:
My employer is from California, I work for client in Delaware and my wife goes to school and works in Oklahoma. I use Delaware address for all purpose, while my wife uses Oklahoma address.

We file Married - Joint return with Delaware as the state of residency (permanent residence). I have to file for Oklahoma as my wife earned income in that state. Does not matter where your employer is registered, it only matters what states did you and/or your spouse earn income from. So I file state returns for Delaware and Oklahoma.

Since Texas has no State income tax, you may be well off by claiming residency in TX. Even though you have NY address, you spent more than 180 days in TX (depends on state for residency rules) you may have to claim TX as your residency state, but that would be a question for a Tax Professional.

Try out with online tax prep sites like: Turbotax, TaxAct, TaxSlayer, HRBlock etc to get a better idea. They will guide you step-by-step. You can pick the paid/deluxe version on one of them as you only pay when you file, and the intent is to just check not file here.

Good Luck.

Thank you all. nepasider, Thanks for ur comment, it was really useful.