diff --git a/api/common/Controller/Bancos.php b/api/common/Controller/Bancos.php
deleted file mode 100644
index 968cf05..0000000
--- a/api/common/Controller/Bancos.php
+++ /dev/null
@@ -1,71 +0,0 @@
-<?php
-namespace Contabilidad\Common\Controller;
-
-use Psr\Http\Message\ServerRequestInterface as Request;
-use Psr\Http\Message\ResponseInterface as Response;
-use ProVM\Common\Define\Controller\Json;
-use ProVM\Common\Factory\Model as Factory;
-use Contabilidad\Banco;
-
-class Bancos {
-  use Json;
-
-  public function __invoke(Request $request, Response $response, Factory $factory): Response {
-    $bancos = $factory->find(Banco::class)->array();
-    if ($bancos) {
-      usort($bancos, function($a, $b) {
-        return strcmp($a['nombre'], $b['nombre']);
-      });
-    }
-    $output = [
-      'bancos' => $bancos
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function show(Request $request, Response $response, Factory $factory, $banco_id): Response {
-    $banco = $factory->find(Banco::class)->one($banco_id);
-    $output = [
-      'input' => $banco_id,
-      'banco' => $banco?->toArray()
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function add(Request $request, Response $response, Factory $factory): Response {
-    $input = json_decode($request->getBody());
-    $results = [];
-    if (is_array($input)) {
-      foreach ($input as $in) {
-        $banco = Banco::add($factory, $in);
-        $results []= ['banco' => $banco?->toArray(), 'agregado' => $banco?->save()];
-      }
-    } else {
-      $banco = Banco::add($factory, $input);
-      $results []= ['banco' => $banco?->toArray(), 'agregado' => $banco?->save()];
-    }
-    $output = [
-      'input' => $input,
-      'bancos' => $results
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function edit(Request $request, Response $response, Factory $factory, $banco_id): Response {
-    $banco = $factory->find(Banco::class)->one($banco_id);
-    $output = [
-      'input' => $banco_id,
-      'old' => $banco->toArray()
-    ];
-    $input = json_decode($request->getBody());
-    $banco->edit($input);
-    $output['banco'] = $banco->toArray();
-    return $this->withJson($response, $output);
-  }
-  public function delete(Request $request, Response $response, Factory $factory, $banco_id): Response {
-    $banco = $factory->find(Banco::class)->one($banco_id);
-    $output = [
-      'input' => $banco_id,
-      'banco' => $banco->toArray(),
-      'eliminado' => $banco->delete()
-    ];
-    return $this->withJson($response, $output);
-  }
-}
diff --git a/api/common/Controller/Cuentas.php b/api/common/Controller/Cuentas.php
index 49634cf..8129e24 100644
--- a/api/common/Controller/Cuentas.php
+++ b/api/common/Controller/Cuentas.php
@@ -90,4 +90,38 @@ class Cuentas {
     ];
     return $this->withJson($response, $output);
   }
+  public function transacciones(Request $request, Response $response, Factory $factory, $cuenta_id): Response {
+    $cuenta = $factory->find(Cuenta::class)->one($cuenta_id);
+    $cargos = null;
+    $abonos = null;
+    $transacciones = null;
+    if ($cuenta !== null) {
+      $cargos = $cuenta->cargos();
+      if ($cargos !== null) {
+        array_walk($cargos, function(&$item) {
+          $item = $item->toArray();
+        });
+      }
+      $abonos = $cuenta->abonos();
+      if ($abonos !== null) {
+        array_walk($abonos, function(&$item) {
+          $item = $item->toArray();
+        });
+      }
+      $transacciones = $cuenta->transacciones();
+      if (count($transacciones)) {
+        array_walk($transacciones, function(&$item) {
+          $item = $item->toArray();
+        });
+      }
+    }
+    $output = [
+      'input' => $cuenta_id,
+      'cuenta' => $cuenta?->toArray(),
+      'cargos' => $cargos,
+      'abonos' => $abonos,
+      'transacciones' => $transacciones
+    ];
+    return $this->withJson($response, $output);
+  }
 }
diff --git a/api/common/Controller/Fuentes.php b/api/common/Controller/Fuentes.php
deleted file mode 100644
index ab2136c..0000000
--- a/api/common/Controller/Fuentes.php
+++ /dev/null
@@ -1,91 +0,0 @@
-<?php
-namespace Contabilidad\Common\Controller;
-
-use Psr\Http\Message\ServerRequestInterface as Request;
-use Psr\Http\Message\ResponseInterface as Response;
-use ProVM\Common\Define\Controller\Json;
-use ProVM\Common\Factory\Model as Factory;
-use Contabilidad\Fuente;
-
-class Fuentes {
-  use Json;
-
-  public function __invoke(Request $request, Response $response, Factory $factory): Response {
-    $fuentes = $factory->find(Fuente::class)->array();
-    $output = [
-      'fuentes' => $fuentes
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function show(Request $request, Response $response, Factory $factory, $fuente_id): Response {
-    $fuente = $factory->find(Fuente::class)->one($fuente_id);
-    $output = [
-      'input' => $fuente_id,
-      'fuente' => $fuente?->toArray()
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function add(Request $request, Response $response, Factory $factory): Response {
-    $input = json_decode($request->getBody());
-    $results = [];
-    if (is_array($input)) {
-      foreach ($input as $in) {
-        $fuente = Fuente::add($factory, $in);
-        $results []= ['fuente' => $fuente?->toArray(), 'agregado' => $fuente?->save()];
-      }
-    } else {
-      $fuente = Fuente::add($factory, $input);
-      $results []= ['fuente' => $fuente?->toArray(), 'agregado' => $fuente?->save()];
-    }
-    $output = [
-      'input' => $input,
-      'fuentes' => $results
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function edit(Request $request, Response $response, Factory $factory, $fuente_id): Response {
-    $fuente = $factory->find(Fuente::class)->one($fuente_id);
-    $output = [
-      'input' => $fuente_id,
-      'old' => $fuente->toArray()
-    ];
-    $input = json_decode($request->getBody());
-    $fuente->edit($input);
-    $output['fuente'] = $fuente->toArray();
-    return $this->withJson($response, $output);
-  }
-  public function delete(Request $request, Response $response, Factory $factory, $fuente_id): Response {
-    $fuente = $factory->find(Fuente::class)->one($fuente_id);
-    $output = [
-      'input' => $fuente_id,
-      'fuente' => $fuente->toArray(),
-      'eliminado' => $fuente->delete()
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function entradas(Request $request, Response $response, Factory $factory, $fuente_id): Response {
-    $fuente = $factory->find(Fuente::class)->one($fuente_id);
-    $entradas = null;
-    if ($fuente !== null) {
-      $entradas = $fuente->entradas();
-      if ($entradas !== null) {
-        usort($entradas, function($a, $b) {
-          $d = $a->fecha()->diffInDays($b->fecha(), false);
-          if ($d === 0) {
-            return strcmp($a->cuenta()->nombre, $b->cuenta()->nombre);
-          }
-          return $d;
-        });
-        array_walk($entradas, function(&$item) {
-          $item = $item->toArray();
-        });
-      }
-    }
-    $output = [
-      'input' => $fuente_id,
-      'fuente' => $fuente?->toArray(),
-      'entradas' => $entradas
-    ];
-    return $this->withJson($response, $output);
-  }
-}
diff --git a/api/common/Controller/TiposFuentes.php b/api/common/Controller/TiposFuentes.php
deleted file mode 100644
index 030eb3f..0000000
--- a/api/common/Controller/TiposFuentes.php
+++ /dev/null
@@ -1,89 +0,0 @@
-<?php
-namespace Contabilidad\Common\Controller;
-
-use Psr\Http\Message\ServerRequestInterface as Request;
-use Psr\Http\Message\ResponseInterface as Response;
-use ProVM\Common\Define\Controller\Json;
-use ProVM\Common\Factory\Model as Factory;
-use Contabilidad\TipoFuente;
-
-class TiposFuentes {
-  use Json;
-
-  public function __invoke(Request $request, Response $response, Factory $factory): Response {
-    $tipos_fuentes = $factory->find(TipoFuente::class)->array();
-    if ($tipos_fuentes) {
-      usort($tipos_fuentes, function($a, $b) {
-        return strcmp($a['descripcion'], $b['descripcion']);
-      });
-    }
-    $output = [
-      'tipos_fuentes' => $tipos_fuentes
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function show(Request $request, Response $response, Factory $factory, $tipo_fuente_id): Response {
-    $tipo_fuente = $factory->find(TipoFuente::class)->one($tipo_fuente_id);
-    $output = [
-      'input' => $tipo_fuente_id,
-      'tipo_fuente' => $tipo_fuente?->toArray()
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function add(Request $request, Response $response, Factory $factory): Response {
-    $input = json_decode($request->getBody());
-    $results = [];
-    if (is_array($input)) {
-      foreach ($input as $in) {
-        $tipo_fuente = TipoFuente::add($factory, $in);
-        $results []= ['tipo_fuente' => $tipo_fuente?->toArray(), 'agregado' => $tipo_fuente?->save()];
-      }
-    } else {
-      $tipo_fuente = TipoFuente::add($factory, $input);
-      $results []= ['tipo_fuente' => $tipo_fuente?->toArray(), 'agregado' => $tipo_fuente?->save()];
-    }
-    $output = [
-      'input' => $input,
-      'tipo_fuentes' => $results
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function edit(Request $request, Response $response, Factory $factory, $tipo_fuente_id): Response {
-    $tipo_fuente = $factory->find(TipoFuente::class)->one($tipo_fuente_id);
-    $output = [
-      'input' => $tipo_fuente_id,
-      'old' => $tipo_fuente->toArray()
-    ];
-    $input = json_decode($request->getBody());
-    $tipo_fuente->edit($input);
-    $output['tipo_fuente'] = $tipo_fuente->toArray();
-    return $this->withJson($response, $output);
-  }
-  public function delete(Request $request, Response $response, Factory $factory, $tipo_fuente_id): Response {
-    $tipo_fuente = $factory->find(TipoFuente::class)->one($tipo_fuente_id);
-    $output = [
-      'input' => $tipo_fuente_id,
-      'tipo_fuente' => $tipo_fuente->toArray(),
-      'eliminado' => $tipo_fuente->delete()
-    ];
-    return $this->withJson($response, $output);
-  }
-  public function fuentes(Request $request, Response $response, Factory $factory, $tipo_fuente_id): Response {
-    $tipo_fuente = $factory->find(TipoFuente::class)->one($tipo_fuente_id);
-    $fuentes = null;
-    if ($tipo_fuente !== null) {
-      $fuentes = $tipo_fuente->fuentes();
-      if ($fuentes !== null) {
-        array_walk($fuentes, function(&$item) {
-          $item = $item->toArray();
-        });
-      }
-    }
-    $output = [
-      'input' => $tipo_fuente_id,
-      'tipo_fuente' => $tipo_fuente?->toArray(),
-      'fuentes' => $fuentes
-    ];
-    return $this->withJson($response, $output);
-  }
-}
diff --git a/api/common/Controller/Entradas.php b/api/common/Controller/Transacciones.php
similarity index 51%
rename from api/common/Controller/Entradas.php
rename to api/common/Controller/Transacciones.php
index 2d7c177..5dc6eec 100644
--- a/api/common/Controller/Entradas.php
+++ b/api/common/Controller/Transacciones.php
@@ -5,15 +5,15 @@ use Psr\Http\Message\ServerRequestInterface as Request;
 use Psr\Http\Message\ResponseInterface as Response;
 use ProVM\Common\Define\Controller\Json;
 use ProVM\Common\Factory\Model as Factory;
-use Contabilidad\Entrada;
+use Contabilidad\Transaccion;
 
-class Entradas {
+class Transacciones {
   use Json;
 
   public function __invoke(Request $request, Response $response, Factory $factory): Response {
-    $entradas = $factory->find(Entrada::class)->array();
-    if ($entradas !== null) {
-      usort($entradas, function($a, $b) {
+    $transacciones = $factory->find(Transaccion::class)->array();
+    if ($transacciones !== null) {
+      usort($transacciones, function($a, $b) {
         $d = $a['fecha'] - $b['fecha'];
         if ($d === 0) {
           return strcmp($a['cuenta']['nombre'], $b['cuenta']['nombre']);
@@ -22,15 +22,15 @@ class Entradas {
       });
     }
     $output = [
-      'entradas' => $entradas
+      'transacciones' => $transacciones
     ];
     return $this->withJson($response, $output);
   }
-  public function show(Request $request, Response $response, Factory $factory, $entrada_id): Response {
-    $entrada = $factory->find(Entrada::class)->one($entrada_id);
+  public function show(Request $request, Response $response, Factory $factory, $transaccion_id): Response {
+    $transaccion = $factory->find(Transaccion::class)->one($transaccion_id);
     $output = [
-      'input' => $entrada_id,
-      'entrada' => $entrada?->toArray()
+      'input' => $transaccion_id,
+      'transaccion' => $transaccion?->toArray()
     ];
     return $this->withJson($response, $output);
   }
@@ -39,36 +39,36 @@ class Entradas {
     $results = [];
     if (is_array($input)) {
       foreach ($input as $in) {
-        $entrada = Entrada::add($factory, $in);
-        $results []= ['entrada' => $entrada?->toArray(), 'agregado' => $entrada?->save()];
+        $transaccion = Transaccion::add($factory, $in);
+        $results []= ['transaccion' => $transaccion?->toArray(), 'agregado' => $transaccion?->save()];
       }
     } else {
-      $entrada = Entrada::add($factory, $input);
-      $results []= ['entrada' => $entrada?->toArray(), 'agregado' => $entrada?->save()];
+      $transaccion = Transaccion::add($factory, $input);
+      $results []= ['transaccion' => $transaccion?->toArray(), 'agregado' => $transaccion?->save()];
     }
     $output = [
       'input' => $input,
-      'entradas' => $results
+      'transacciones' => $results
     ];
     return $this->withJson($response, $output);
   }
-  public function edit(Request $request, Response $response, Factory $factory, $entrada_id): Response {
-    $entrada = $factory->find(Entrada::class)->one($entrada_id);
+  public function edit(Request $request, Response $response, Factory $factory, $transaccion_id): Response {
+    $transaccion = $factory->find(Transaccion::class)->one($transaccion_id);
     $output = [
-      'input' => $entrada_id,
-      'old' => $entrada->toArray()
+      'input' => $transaccion_id,
+      'old' => $transaccion->toArray()
     ];
     $input = json_decode($request->getBody());
-    $entrada->edit($input);
-    $output['entrada'] = $entrada->toArray();
+    $transaccion->edit($input);
+    $output['transaccion'] = $transaccion->toArray();
     return $this->withJson($response, $output);
   }
-  public function delete(Request $request, Response $response, Factory $factory, $entrada_id): Response {
-    $entrada = $factory->find(Entrada::class)->one($entrada_id);
+  public function delete(Request $request, Response $response, Factory $factory, $transaccion_id): Response {
+    $transaccion = $factory->find(Transaccion::class)->one($transaccion_id);
     $output = [
-      'input' => $entrada_id,
-      'entrada' => $entrada->toArray(),
-      'eliminado' => $entrada->delete()
+      'input' => $transaccion_id,
+      'transaccion' => $transaccion->toArray(),
+      'eliminado' => $transaccion->delete()
     ];
     return $this->withJson($response, $output);
   }
diff --git a/api/resources/routes/bancos.php b/api/resources/routes/bancos.php
deleted file mode 100644
index ec73cc6..0000000
--- a/api/resources/routes/bancos.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-use Contabilidad\Common\Controller\Bancos;
-
-$app->group('/bancos', function($app) {
-  $app->post('/add[/]', [Bancos::class, 'add']);
-  $app->get('[/]', Bancos::class);
-});
-$app->group('/banco/{banco_id}', function($app) {
-  $app->put('/edit', [Bancos::class, 'edit']);
-  $app->delete('/delete', [Bancos::class, 'delete']);
-  $app->get('[/]', [Bancos::class, 'show']);
-});
diff --git a/api/resources/routes/cuentas.php b/api/resources/routes/cuentas.php
index b68375e..6e93ebb 100644
--- a/api/resources/routes/cuentas.php
+++ b/api/resources/routes/cuentas.php
@@ -7,6 +7,7 @@ $app->group('/cuentas', function($app) {
 });
 $app->group('/cuenta/{cuenta_id}', function($app) {
   $app->get('/entradas', [Cuentas::class, 'entradas']);
+  $app->get('/transacciones', [Cuentas::class, 'transacciones']);
   $app->put('/edit', [Cuentas::class, 'edit']);
   $app->delete('/delete', [Cuentas::class, 'delete']);
   $app->get('[/]', [Cuentas::class, 'show']);
diff --git a/api/resources/routes/entradas.php b/api/resources/routes/entradas.php
deleted file mode 100644
index aa41b03..0000000
--- a/api/resources/routes/entradas.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-use Contabilidad\Common\Controller\Entradas;
-
-$app->group('/entradas', function($app) {
-  $app->post('/add[/]', [Entradas::class, 'add']);
-  $app->get('[/]', Entradas::class);
-});
-$app->group('/entrada/{entrada_id}', function($app) {
-  $app->put('/edit', [Entradas::class, 'edit']);
-  $app->delete('/delete', [Entradas::class, 'delete']);
-  $app->get('[/]', [Entradas::class, 'show']);
-});
diff --git a/api/resources/routes/fuentes.php b/api/resources/routes/fuentes.php
deleted file mode 100644
index 20c2a94..0000000
--- a/api/resources/routes/fuentes.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-use Contabilidad\Common\Controller\Fuentes;
-
-$app->group('/fuentes', function($app) {
-  $app->post('/add[/]', [Fuentes::class, 'add']);
-  $app->get('[/]', Fuentes::class);
-});
-$app->group('/fuente/{fuente_id}', function($app) {
-  $app->get('/entradas', [Fuentes::class, 'entradas']);
-  $app->put('/edit', [Fuentes::class, 'edit']);
-  $app->delete('/delete', [Fuentes::class, 'delete']);
-  $app->get('[/]', [Fuentes::class, 'show']);
-});
diff --git a/api/resources/routes/tipos_fuentes.php b/api/resources/routes/tipos_fuentes.php
deleted file mode 100644
index 5af20ae..0000000
--- a/api/resources/routes/tipos_fuentes.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-use Contabilidad\Common\Controller\TiposFuentes;
-
-$app->group('/tipos_fuentes', function($app) {
-  $app->post('/add[/]', [TiposFuentes::class, 'add']);
-  $app->get('[/]', TiposFuentes::class);
-});
-$app->group('/tipo_fuente/{tipo_fuente_id}', function($app) {
-  $app->get('/fuentes', [TiposFuentes::class, 'fuentes']);
-  $app->put('/edit', [TiposFuentes::class, 'edit']);
-  $app->delete('/delete', [TiposFuentes::class, 'delete']);
-  $app->get('[/]', [TiposFuentes::class, 'show']);
-});
diff --git a/api/resources/routes/transacciones.php b/api/resources/routes/transacciones.php
new file mode 100644
index 0000000..53b73c6
--- /dev/null
+++ b/api/resources/routes/transacciones.php
@@ -0,0 +1,12 @@
+<?php
+use Contabilidad\Common\Controller\Transacciones;
+
+$app->group('/transacciones', function($app) {
+  $app->post('/add[/]', [Transacciones::class, 'add']);
+  $app->get('[/]', Transacciones::class);
+});
+$app->group('/transaccion/{transaccion_id}', function($app) {
+  $app->put('/edit', [Transacciones::class, 'edit']);
+  $app->delete('/delete', [Transacciones::class, 'delete']);
+  $app->get('[/]', [Transacciones::class, 'show']);
+});
diff --git a/api/src/Banco.php b/api/src/Banco.php
deleted file mode 100644
index 971ce42..0000000
--- a/api/src/Banco.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-namespace Contabilidad;
-
-use ProVM\Common\Alias\Model;
-
-/**
- * @property int $id
- * @property string $nombre
- */
-class Banco extends Model {
-  public static $_table = 'bancos';
-  protected static $fields = ['nombre'];
-}
diff --git a/api/src/Categoria.php b/api/src/Categoria.php
index 658da8a..a44574e 100644
--- a/api/src/Categoria.php
+++ b/api/src/Categoria.php
@@ -18,4 +18,24 @@ class Categoria extends Model {
     }
     return $this->cuentas;
   }
+
+  protected $saldo;
+  public function saldo() {
+    if ($this->saldo === null) {
+      $this->saldo = 0;
+      if ($this->cuentas() !== null) {
+        $this->saldo = array_reduce($this->cuentas(), function($sum, $item) {
+          return $sum + $item->saldo();
+        });
+      }
+    }
+    return $this->saldo;
+  }
+
+  public function toArray(): array {
+    $arr = parent::toArray();
+    $arr['saldo'] = $this->saldo();
+    $arr['saldoFormateado'] = '$' . number_format($this->saldo(), 0, ',', '.');
+    return $arr;
+  }
 }
diff --git a/api/src/Cuenta.php b/api/src/Cuenta.php
index bf14878..66d809d 100644
--- a/api/src/Cuenta.php
+++ b/api/src/Cuenta.php
@@ -28,9 +28,61 @@ class Cuenta extends Model {
     return $this->entradas;
   }
 
+  protected $cargos;
+  public function cargos() {
+    if ($this->cargos === null) {
+      $this->cargos = $this->parentOf(Transaccion::class, [Model::CHILD_KEY => 'hasta_id']);
+    }
+    return $this->cargos;
+  }
+  protected $abonos;
+  public function abonos() {
+    if ($this->abonos === null) {
+      $this->abonos = $this->parentOf(Transaccion::class, [Model::CHILD_KEY => 'desde_id']);
+    }
+    return $this->abonos;
+  }
+  protected $transacciones;
+  public function transacciones() {
+    if ($this->transacciones === null) {
+      $this->transacciones = [];
+      if ($this->abonos() !== null) {
+        $this->transacciones = array_merge($this->transacciones, $this->abonos());
+      }
+      if ($this->cargos() !== null) {
+        $this->transacciones = array_merge($this->transacciones, array_map(function($item) {
+          $item->valor = - $item->valor;
+          return $item;
+        }, $this->cargos()));
+      }
+      usort($this->transacciones, function($a, $b) {
+        $d = $a->fecha()->diffInDays($b->fecha(), false);
+        if ($d === 0) {
+          return $a->valor - $b->valor;
+        }
+        return $d;
+      });
+    }
+    return $this->transacciones;
+  }
+  protected $saldo;
+  public function saldo() {
+    if ($this->saldo === null) {
+      $this->saldo = 0;
+      if (count($this->transacciones()) > 0) {
+        $this->saldo = array_reduce($this->transacciones(), function($sum, $item) {
+          return $sum + $item->valor;
+        });
+      }
+    }
+    return $this->saldo;
+  }
+
   public function toArray(): array {
     $arr = parent::toArray();
     $arr['categoria'] = $this->categoria()->toArray();
+    $arr['saldo'] = $this->saldo();
+    $arr['saldoFormateado'] = '$' . number_format($this->saldo(), 0, ',', '.');
     return $arr;
   }
 }
diff --git a/api/src/Entrada.php b/api/src/Entrada.php
deleted file mode 100644
index 48b3196..0000000
--- a/api/src/Entrada.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php
-namespace Contabilidad;
-
-use Carbon\Carbon;
-use ProVM\Common\Alias\Model;
-
-/**
- * @property int $id
- * @property \DateTime $fecha
- * @property Fuente $fuente_id
- * @property string $glosa
- * @property string $detalle
- * @property Cuenta $cuenta_id
- * @property double $valor
- */
-class Entrada extends Model {
-  public static $_table = 'entradas';
-  protected static $fields = ['fecha', 'fuente_id', 'glosa', 'detalle', 'cuenta_id', 'valor'];
-
-  protected $fuente;
-  public function fuente() {
-    if ($this->fuente === null) {
-      $this->fuente = $this->childOf(Fuente::class, [Model::SELF_KEY => 'fuente_id']);
-    }
-    return $this->fuente;
-  }
-  protected $cuenta;
-  public function cuenta() {
-    if ($this->cuenta === null) {
-      $this->cuenta = $this->childOf(Cuenta::class, [Model::SELF_KEY => 'cuenta_id']);
-    }
-    return $this->cuenta;
-  }
-  public function fecha(\DateTime $fecha = null) {
-    if ($fecha === null) {
-      return Carbon::parse($this->fecha);
-    }
-    $this->fecha = $fecha->format('Y-m-d');
-  }
-
-  public function toArray(): array {
-    $arr = parent::toArray();
-    $arr['fuente'] = $this->fuente()->toArray();
-    $arr['cuenta'] = $this->cuenta()->toArray();
-    $arr['fechaFormateada'] = $this->fecha()->format('d-m-Y');
-    $arr['valorFormateado'] = '$' . number_format($this->valor, 0, ',', '.');
-    return $arr;
-  }
-}
diff --git a/api/src/Fuente.php b/api/src/Fuente.php
deleted file mode 100644
index 17869bf..0000000
--- a/api/src/Fuente.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-namespace Contabilidad;
-
-use ProVM\Common\Alias\Model;
-
-/**
- * @property int $id
- * @property TipoFuente $tipo_id
- * @property Banco $banco_id
- */
-class Fuente extends Model {
-  public static $_table = 'fuentes';
-  protected static $fields = ['tipo_id', 'banco_id'];
-
-  protected $tipo;
-  public function tipo() {
-    if ($this->tipo === null) {
-      $this->tipo = $this->childOf(TipoFuente::class, [Model::SELF_KEY => 'tipo_id']);
-    }
-    return $this->tipo;
-  }
-  protected $banco;
-  public function banco() {
-    if ($this->banco === null) {
-      $this->banco = $this->childOf(Banco::class, [Model::SELF_KEY => 'banco_id']);
-    }
-    return $this->banco;
-  }
-  protected $saldo;
-  public function saldo() {
-    if ($this->saldo === null) {
-      $this->saldo = 0;
-      if ($this->entradas() !== null) {
-        $this->saldo = array_reduce($this->entradas(), function($sum, $item) {
-          return $sum + $item->valor;
-        });
-      }
-    }
-    return $this->saldo;
-  }
-
-  protected $entradas;
-  public function entradas() {
-    if ($this->entradas === null) {
-      $this->entradas = $this->parentOf(Entrada::class, [Model::CHILD_KEY => 'fuente_id']);
-    }
-    return $this->entradas;
-  }
-
-  public function toArray(): array {
-    $arr = parent::toArray();
-    $arr['tipo'] = $this->tipo()->toArray();
-    $arr['banco'] = $this->banco()->toArray();
-    $arr['saldo'] = $this->saldo();
-    $arr['saldoFormateado'] = '$' . number_format($this->saldo(), 0, ',', '.');
-    return $arr;
-  }
-}
diff --git a/api/src/TipoFuente.php b/api/src/TipoFuente.php
deleted file mode 100644
index 8397cf8..0000000
--- a/api/src/TipoFuente.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-namespace Contabilidad;
-
-use ProVM\Common\Alias\Model;
-
-/**
- * @property int $id
- * @property string $descripcion
- */
-class TipoFuente extends Model {
-  public static $_table = 'tipos_fuente';
-  protected static $fields = ['descripcion'];
-
-  protected $fuentes;
-  public function fuentes() {
-    if ($this->fuentes === null) {
-      $this->fuentes = $this->parentOf(Fuente::class, [Model::CHILD_KEY => 'tipo_id']);
-    }
-    return $this->fuentes;
-  }
-}
diff --git a/api/src/Transaccion.php b/api/src/Transaccion.php
new file mode 100644
index 0000000..162005b
--- /dev/null
+++ b/api/src/Transaccion.php
@@ -0,0 +1,49 @@
+<?php
+namespace Contabilidad;
+
+use Carbon\Carbon;
+use ProVM\Common\Alias\Model;
+
+/**
+ * @property int $id
+ * @property Cuenta $desde_id
+ * @property Cuenta $hasta_id
+ * @property \DateTime $fecha
+ * @property string $glosa
+ * @property string $detalle
+ * @property double $valor
+ */
+class Transaccion extends Model {
+  public static $_table = 'transacciones';
+  protected static $fields = ['desde_id', 'hasta_id', 'fecha', 'glosa', 'detalle', 'valor'];
+
+  protected $desde;
+  public function desde() {
+    if ($this->desde === null) {
+      $this->desde = $this->childOf(Cuenta::class, [Model::SELF_KEY => 'desde_id']);
+    }
+    return $this->desde;
+  }
+  protected $hasta;
+  public function hasta() {
+    if ($this->hasta === null) {
+      $this->hasta = $this->childOf(Cuenta::class, [Model::SELF_KEY => 'hasta_id']);
+    }
+    return $this->hasta;
+  }
+  public function fecha(\DateTime $fecha = null) {
+    if ($fecha === null) {
+      return Carbon::parse($this->fecha);
+    }
+    $this->fecha = $fecha->format('Y-m-d');
+  }
+
+  public function toArray(): array {
+    $arr = parent::toArray();
+    $arr['desde'] = $this->desde()->toArray();
+    $arr['hasta'] = $this->hasta()->toArray();
+    $arr['fechaFormateada'] = $this->fecha()->format('d-m-Y');
+    $arr['valorFormateado'] = '$' . number_format($this->valor, 0, ',', '.');
+    return $arr;
+  }
+}