The Kansas Legislature’s top Republican leaders are acknowledging that their private negotiations on tax issues have hit an impasse.

Senate President Susan Wagle of Wichita told fellow GOP senators Tuesday that her chamber and the House don’t even agree on assumptions to use in projecting state revenues and spending.

GOP leaders want to follow up on last year’s cuts in personal income taxes with additional reductions. But the state must stabilize its budget, and the Senate has approved a bill canceling decrease in the sales tax scheduled for July.

The House wants to let the tax drop as planned.

Wagle said the House is using unrealistic assumptions to make its proposals look better. House Speaker Ray Merrick of Stilwell said that’s not the case.