To improve the input-output balance of nitrogen (N) and phosphorous (P) in national agricultural systems, reducing the amounts of imported soya bean meal and mineral phosphate represents a pragmatic strategy. If dietary N and P contents can be reduced simultaneously, their excretion will be as well, thereby improving the nutrient balance at farm level. This study investigated, using 48 pigs, the removal of soya bean meal (N-) or/and mineral phosphate (P-/NP-) combined with a reduction of N and/or P contents by ≥ 10% compared to actual practices (C). Soya bean meal was replaced with locally produced rapeseed press-cake and peas and with five additional synthetic amino acids. Compared to diet C, the N- and NP- diets contained 140 (-10%) and 116 g crude protein (- 15%) per kg, while the P- and NP- diets contained 3.4 (-20%) and 3.0 g P (-22%) per kg in the grower and finisher phases, respectively. As compromise, it was accepted that in grower N- and NP- soya bean meal remained at 2.7% and that the feed cost increased by 5%. In grower P- and NP-, digestible P provided only 77% of the requirement. No N × P interaction was observed. The diets did not influence growth performance or body composition in terms of lean and fat tissues. However, the phosphate free diets (P- and NP- ) decreased (P < 0.001) bone mineral mass and density by 8% at diet change and by 6% at 109 kg body weight. The diets with less N and P decreased (P < 0.001) their excretion by 20% and 25%, respectively. In conclusion, pigs were successfully raised on diets based on local protein sources and without mineral phosphate, while reducing nutrient excretion.