Surplus Protection Act of 1999

Surplus Protection Act of 1999 - Amends the Balanced Budget and Emergency Deficit Control Act of 1985 (Gramm-Rudman-Hollings Act) to provide that the purpose of pay-as-you-go provisions is to ensure that legislation (currently, legislation enacted before FY 2002) affecting direct spending or receipts that results in a net budget increase (currently, increases the deficit) will trigger an offsetting sequestration, except to the extent that the total budget surplus exceeds the social security surplus.

Extends pay-as-you-go and other specified provisions through FY 2009.

Defines "budget increase" and "budget decrease" to mean, for purposes of pay-as-you-go provisions, an increase or decrease, respectively, in direct spending outlays or a decrease or increase, respectively, in receipts relative to the baseline.

Requires a sequestration to offset the amount of any net budget (currently, deficit) increase caused by all direct spending and receipts legislation. Applies a sequestration for a fiscal year only to the extent that any surplus, before the sequestration in the total budget (which includes both on- and off-budget Government accounts), is less than the combined surplus for that year in the Federal Old-Age and Survivors Insurance Trust Fund and the Federal Disability Insurance Trust Fund.