President Carter's new pay proposal for top elected and appointed U.S. officials would translate into a raise of about 15 percent, or $7,500 a year, for most members of the Senior Executive Service. His plan, if accepted by Congress, would raise SES pay levels, which are now generally limited to $50,112.50 to a maximum of $61,600.

The Senior Executive Service is made up of nearly 8,000 career and political officials, most of whom were formerly supergraders in the Grade 16, 17 and 18 category. Most of the SES personnel are located in Washington.

Carter's pay plan deals strictly with salaries for cabine-level personnel and other top appointed officials and members of Congress. But the effect or raising pay for those top officials would be to give raises to U.S. executives -- both career and political -- who are now frozen at $50,112.50.

If Congress approves the pay plan, the ceiling on career federal pay would rise to ?61,600. But the vast majority of federal workers in the SES, or in the remaining general schedule (GS) pay categories, would get raises ranging from $375 a year for personnel in Grade 15, step 5, to $8,388 for people in the upper levels of Grade 16, and all Grade 17 and 18 personnel.

SES members would get raises ranging from $2,135 for those in SES pay level one, to $11,488 for most in Level 6. More than half the SES work force is at Level 4 ($50,112.50). They would go to $57,673.

Currently most SES members, regardless of their pay level, are frozen at $50,1122.50. If the Carter pay plan becomes law, here are the new payable rates for the SES:

Level 1: $52,247; Level 2: $53,996; Level 3: $55,804; Level £ $57,673; Level 5: $59,604; and Level 6: $61,600.

The maximum pay rate for Grade 15 would go to $57,912. The maximum pay rate for Grade 16 would go to $58,500 maximum also would apply to all Grade 17 and 18 personnel, who are currently limited to $50,112.50.

The Executive Level pay schedule would go to $81,300 for cabinet officers now at $69,630. Executive Level 5 personnel, administrators of agencies, some assistant secretaries and board chairmen not at $50,112.50 would go to $58,500.

None of the increases can go into effect until Congress acts on them. It could do so by separate legislation, or by simply allowing the current "cap" on top federal pay to expire. Those pay caps, which have frozen salaries of members of Congress, the cabinet, vice president and senior-level career and political officials, will expire automatically in June -- unless Congress reimposes them. That means the raises cold be put into effect as soon as Congress okays them (assuming that happens) or later this year if Congress allows it own pay freeze to expire.