diff --git a/doc/sphinx/source/tutorials/thcov_tutorial.rst b/doc/sphinx/source/tutorials/thcov_tutorial.rst
index 1a6a6ceb5f..9b654efe57 100644
--- a/doc/sphinx/source/tutorials/thcov_tutorial.rst
+++ b/doc/sphinx/source/tutorials/thcov_tutorial.rst
@@ -164,11 +164,6 @@ It can be found `here <https://github.com/NNPDF/nnpdf/tree/master/validphys2/exa
 	  use_thcovmat_in_fitting: true
 	  use_thcovmat_in_sampling: true
 
-	sampling_t0:
-	  use_t0: false
-
-	fitting_t0:
-	  use_t0: true
 
 	############################################################
 	fitting:
diff --git a/n3fit/runcards/examples/Basic_feature_scaling.yml b/n3fit/runcards/examples/Basic_feature_scaling.yml
index e5e305e880..5eb4b3fd50 100644
--- a/n3fit/runcards/examples/Basic_feature_scaling.yml
+++ b/n3fit/runcards/examples/Basic_feature_scaling.yml
@@ -33,8 +33,8 @@ datacuts:
 theory:
   theoryid: 200       # database id
 sampling:
-  use_t0: false
   separate_multiplicative: true
+
 ############################################################
 trvlseed: 1
 nnseed: 2
diff --git a/n3fit/runcards/examples/Basic_hyperopt.yml b/n3fit/runcards/examples/Basic_hyperopt.yml
index 6c69cbffd8..6b5393a870 100644
--- a/n3fit/runcards/examples/Basic_hyperopt.yml
+++ b/n3fit/runcards/examples/Basic_hyperopt.yml
@@ -49,9 +49,7 @@ theory:
   theoryid: 200        # database id
 
 sampling:
-  use_t0: false
   separate_multiplicative: true
-
 hyperscan_config:
   stopping:
       min_epochs: 1e3
diff --git a/n3fit/runcards/examples/Basic_runcard.yml b/n3fit/runcards/examples/Basic_runcard.yml
index 53159b8c86..ab14cdeb71 100644
--- a/n3fit/runcards/examples/Basic_runcard.yml
+++ b/n3fit/runcards/examples/Basic_runcard.yml
@@ -34,9 +34,7 @@ theory:
   theoryid: 200       # database id
 
 sampling:
-  use_t0: false
   separate_multiplicative: true
-
 parameters: # This defines the parameter dictionary that is passed to the Model Trainer
   nodes_per_layer: [15, 10, 8]
   activation_per_layer: ['sigmoid', 'sigmoid', 'linear']
diff --git a/n3fit/runcards/examples/Basic_runcard_parallel.yml b/n3fit/runcards/examples/Basic_runcard_parallel.yml
index 2a17f8f384..32853e4413 100644
--- a/n3fit/runcards/examples/Basic_runcard_parallel.yml
+++ b/n3fit/runcards/examples/Basic_runcard_parallel.yml
@@ -35,7 +35,6 @@ theory:
   theoryid: 162        # database id
 
 sampling:
-  use_t0: false
   separate_multiplicative: true
 ############################################################
 trvlseed: 1
diff --git a/n3fit/runcards/examples/DIS_diagonal_l2reg_example.yml b/n3fit/runcards/examples/DIS_diagonal_l2reg_example.yml
index 1300558b4e..ff607d1a5b 100644
--- a/n3fit/runcards/examples/DIS_diagonal_l2reg_example.yml
+++ b/n3fit/runcards/examples/DIS_diagonal_l2reg_example.yml
@@ -57,9 +57,7 @@ theory:
   theoryid: 162        # database id
 
 sampling:
-  use_t0: false
   separate_multiplicative: true
-
 ############################################################
 trvlseed: 1
 nnseed: 2
diff --git a/n3fit/runcards/examples/Fit_with_theory_covmat.yml b/n3fit/runcards/examples/Fit_with_theory_covmat.yml
index ff5915f59e..5ec686c8c9 100644
--- a/n3fit/runcards/examples/Fit_with_theory_covmat.yml
+++ b/n3fit/runcards/examples/Fit_with_theory_covmat.yml
@@ -75,9 +75,6 @@ theorycovmatconfig:
   use_thcovmat_in_fitting: true
   use_thcovmat_in_sampling: true
 
-sampling:
-  use_t0: false
-  separate_multiplicative: false
 
 ############################################################
 trvlseed: 376191634
diff --git a/n3fit/runcards/examples/developing.yml b/n3fit/runcards/examples/developing.yml
index 643492e353..57c10236bc 100644
--- a/n3fit/runcards/examples/developing.yml
+++ b/n3fit/runcards/examples/developing.yml
@@ -63,9 +63,7 @@ theory:
   theoryid: 200        # database id
 
 sampling:
-  use_t0: false
   separate_multiplicative: true
-
 ############################################################
 trvlseed: 1
 nnseed: 2
diff --git a/n3fit/src/n3fit/scripts/n3fit_exec.py b/n3fit/src/n3fit/scripts/n3fit_exec.py
index 264acb4eee..b62142bfb1 100755
--- a/n3fit/src/n3fit/scripts/n3fit_exec.py
+++ b/n3fit/src/n3fit/scripts/n3fit_exec.py
@@ -158,10 +158,8 @@ def from_yaml(cls, o, *args, **kwargs):
             N3FIT_FIXED_CONFIG['use_scalevar_uncertainties'] = thconfig.get('use_scalevar_uncertainties', True) 
         #Sampling flags
         if (sam_t0:=file_content.get('sampling')) is not None:
-            N3FIT_FIXED_CONFIG['use_t0_sampling'] = sam_t0.get('use_t0', False) 
             N3FIT_FIXED_CONFIG['separate_multiplicative'] = sam_t0.get('separate_multiplicative', True) 
         #Fitting flag
-        N3FIT_FIXED_CONFIG['use_t0_fitting'] = file_content.get('fitting').get('use_t0', True)
         file_content.update(N3FIT_FIXED_CONFIG)
         return cls(file_content, *args, **kwargs)
 
diff --git a/validphys2/src/validphys/config.py b/validphys2/src/validphys/config.py
index 099e3e105f..853c282dd4 100644
--- a/validphys2/src/validphys/config.py
+++ b/validphys2/src/validphys/config.py
@@ -713,7 +713,6 @@ def produce_dataset_inputs_fitting_covmat(
         self,
         theory_covmat_flag=False,
         use_thcovmat_in_fitting=False,
-        use_t0_fitting=True,
     ):
         """
         Produces the correct covmat to be used in fitting_data_dict according
@@ -723,16 +722,9 @@ def produce_dataset_inputs_fitting_covmat(
         """
         from validphys import covmats
 
-        if use_t0_fitting:
-            if theory_covmat_flag and use_thcovmat_in_fitting:
-                return covmats.dataset_inputs_t0_total_covmat
-            else:
-                return covmats.dataset_inputs_t0_exp_covmat
-        else:
-            if theory_covmat_flag and use_thcovmat_in_fitting:
-                return covmats.dataset_inputs_total_covmat
-            else:
-                return covmats.dataset_inputs_exp_covmat
+        if theory_covmat_flag and use_thcovmat_in_fitting:
+            return covmats.dataset_inputs_t0_total_covmat
+        return covmats.dataset_inputs_t0_exp_covmat
 
     @configparser.explicit_node
     def produce_dataset_inputs_sampling_covmat(
@@ -740,7 +732,6 @@ def produce_dataset_inputs_sampling_covmat(
         sep_mult,
         theory_covmat_flag=False,
         use_thcovmat_in_sampling=False,
-        use_t0_sampling=False,
     ):
         """
         Produces the correct covmat to be used in make_replica according
@@ -750,28 +741,16 @@ def produce_dataset_inputs_sampling_covmat(
         """
         from validphys import covmats
 
-        if use_t0_sampling:
-            if theory_covmat_flag and use_thcovmat_in_sampling:
-                if sep_mult:
-                    return covmats.dataset_inputs_t0_total_covmat_separate
-                else:
-                    return covmats.dataset_inputs_t0_total_covmat
+        if theory_covmat_flag and use_thcovmat_in_sampling:
+            if sep_mult:
+                return covmats.dataset_inputs_total_covmat_separate
             else:
-                if sep_mult:
-                    return covmats.dataset_inputs_t0_exp_covmat_separate
-                else:
-                    return covmats.dataset_inputs_t0_exp_covmat
+                return covmats.dataset_inputs_total_covmat
         else:
-            if theory_covmat_flag and use_thcovmat_in_sampling:
-                if sep_mult:
-                    return covmats.dataset_inputs_total_covmat_separate
-                else:
-                    return covmats.dataset_inputs_total_covmat
+            if sep_mult:
+                return covmats.dataset_inputs_exp_covmat_separate
             else:
-                if sep_mult:
-                    return covmats.dataset_inputs_exp_covmat_separate
-                else:
-                    return covmats.dataset_inputs_exp_covmat
+                return covmats.dataset_inputs_exp_covmat
 
     def produce_loaded_theory_covmat(
         self,
@@ -1051,12 +1030,12 @@ def parse_use_t0(self, do_use_t0: bool):
 
     # TODO: Find a good name for this
     def produce_t0set(
-        self, t0pdfset=None, use_t0_sampling=False, use_t0_fitting=True,
+        self, t0pdfset=None, use_t0=False,
     ):
         """Return the t0set if use_t0 is True and None otherwise. Raises an
         error if t0 is requested but no t0set is given.
         """
-        if use_t0_sampling or use_t0_fitting:
+        if use_t0:
             if not t0pdfset:
                 raise ConfigError("Setting use_t0 requires specifying a valid t0pdfset")
             return t0pdfset