expense-tracker-inertiajs/database/migrations/2021_12_13_035435_create_budget_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateBudgetTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('budgets', function (Blueprint $table) {
            $table->id();
            $table->foreignId('category_id')->nullable();
            $table->decimal('rollover', 12, 2)->default(0);
            $table->decimal('budget', 12, 2)->default(0);
            $table->decimal('total_used', 12, 2)->default(0);
            $table->decimal('remain', 12, 2)->default(0);
            $table->date('start_date')->nullable();
            $table->date('end_date')->nullable();
            $table->timestamps();
            $table->softDeletes();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('budgets');
    }
}