The choice to go for either a traditional IRA or Roth IRA depends on your current tax bracket and your anticipated tax bracket during retirement.
Anyone is eligible to apply for a Traditional IRA regardless of how much income one makes. However, the amount that you will be contributing will depend on how much you earn.
Nonetheless, any form of deduction, no matter how much, goes a long way, not only when it comes to tax deductions, but most especially when it comes to retirement savings.
As for the eligibility for a Roth IRA contributions, you will need to be earning only up to a certain level of income – typically, a household income that amounts to beyond $50,000 may no longer qualify for a Roth IRA.
Plus, when you file your household tax jointly, your (non-working) spouse can also open an IRA account (whether Traditional or Roth) for his or her own retirement savings.