A Mechanical Engineer earning $70K/year in New Hampshire takes home $58,020 after all taxes. That’s $4,835/month, with an effective tax rate of 17.1%.
The estimated median salary for Mechanical Engineers in New Hampshire is $99K (adjusted from the national median of $92K using New Hampshire’s cost-of-living index of 108). At $70K, you’re earning 29% below the state-adjusted median for this profession.
You’re earning slightly below the state-adjusted median, which is common for mid-career Mechanical Engineers or those in lower-cost areas within New Hampshire. The salary range for Mechanical Engineers nationally is 65K–130K, so there’s room for growth as you gain experience and specialization.
Filing as married filing jointly on $70K (single earner) saves you $2,585/year ($215/month) compared to filing single. This marriage bonus comes from the doubled standard deduction ($32,200 vs $16,100) and wider lower brackets.
Mechanical engineers who hold a Professional Engineer (PE) license can deduct licensing and continuing education costs if self-employed. Patent bonuses or invention awards from your employer are taxed as ordinary income. Engineers who travel to job sites or manufacturing facilities should track mileage if self-employed — the 2026 standard mileage rate can add up to significant deductions. If you receive a signing bonus when changing employers, it’s withheld at the 22% supplemental rate regardless of your actual bracket.
At #4 out of 50 states for take-home pay on a $70K salary, New Hampshire is among the best states for keeping your paycheck. You’d keep $0 more per year in Alaska (#1), or $0/month.
After adjusting for cost of living, New Hampshire ranks #36 in purchasing power. That’s a drop from #4 in raw take-home — New Hampshire’s higher cost of living erodes some of your advantage.