diff --git a/account_payment_methods.go b/account_payment_methods.go
new file mode 100644
index 000000000..2afcc3bc6
--- /dev/null
+++ b/account_payment_methods.go
@@ -0,0 +1,165 @@
+package linodego
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/linode/linodego/internal/parseabletime"
+)
+
+// PaymentMethod represents a PaymentMethod object
+type PaymentMethod struct {
+	// The unique ID of the Payment Method.
+	ID int `json:"id"`
+
+	// When the Payment Method was created.
+	Created *time.Time `json:"created"`
+
+	// Whether this Payment Method is the default method for automatically processing service charges.
+	IsDefault bool `json:"is_default"`
+
+	// The type of Payment Method.
+	Type string `json:"type"`
+
+	// The detailed data for the Payment Method, which can be of varying types.
+	Data interface{} `json:"data"`
+}
+
+// PaymentMethodDataCreditCard represents a PaymentMethodDataCreditCard object
+type PaymentMethodDataCreditCard struct {
+	// The type of credit card.
+	CardType string `json:"card_type"`
+
+	// The expiration month and year of the credit card.
+	Expiry string `json:"expiry"`
+
+	// The last four digits of the credit card number.
+	LastFour string `json:"last_four"`
+}
+
+// PaymentMethodDataGooglePay represents a PaymentMethodDataGooglePay object
+type PaymentMethodDataGooglePay struct {
+	// The type of credit card.
+	CardType string `json:"card_type"`
+
+	// The expiration month and year of the credit card.
+	Expiry string `json:"expiry"`
+
+	// The last four digits of the credit card number.
+	LastFour string `json:"last_four"`
+}
+
+// PaymentMethodDataPaypal represents a PaymentMethodDataPaypal object
+type PaymentMethodDataPaypal struct {
+	// The email address associated with your PayPal account.
+	Email string `json:"email"`
+
+	// PayPal Merchant ID associated with your PayPal account.
+	PaypalID string `json:"paypal_id"`
+}
+
+// PaymentMethodCreateOptions fields are those accepted by CreatePaymentMethod
+type PaymentMethodCreateOptions struct {
+	// Whether this Payment Method is the default method for automatically processing service charges.
+	IsDefault bool `json:"is_default"`
+
+	// The type of Payment Method. Alternative payment methods including Google Pay and PayPal can be added using the Cloud Manager.
+	Type string `json:"type"`
+
+	// An object representing the credit card information you have on file with Linode to make Payments against your Account.
+	Data *PaymentMethodCreateOptionsData `json:"data"`
+}
+
+type PaymentMethodCreateOptionsData struct {
+	// Your credit card number. No spaces or hyphens (-) allowed.
+	CardNumber string `json:"card_number"`
+
+	// CVV (Card Verification Value) of the credit card, typically found on the back of the card.
+	CVV string `json:"cvv"`
+
+	// A value from 1-12 representing the expiration month of your credit card.
+	ExpiryMonth int `json:"expiry_month"`
+
+	// A four-digit integer representing the expiration year of your credit card.
+	ExpiryYear int `json:"expiry_year"`
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface
+func (i *PaymentMethod) UnmarshalJSON(b []byte) error {
+	if len(b) == 0 || string(b) == "{}" || string(b) == "null" {
+		return nil
+	}
+
+	type Mask PaymentMethod
+
+	pm := &struct {
+		*Mask
+		Created *parseabletime.ParseableTime `json:"created"`
+		Data    json.RawMessage              `json:"data"`
+	}{
+		Mask: (*Mask)(i),
+	}
+
+	if err := json.Unmarshal(b, &pm); err != nil {
+		return err
+	}
+
+	// Process Data based on the Type field
+	switch i.Type {
+	case "credit_card":
+		var creditCardData PaymentMethodDataCreditCard
+		if err := json.Unmarshal(pm.Data, &creditCardData); err != nil {
+			return err
+		}
+		i.Data = creditCardData
+	case "google_pay":
+		var googlePayData PaymentMethodDataGooglePay
+		if err := json.Unmarshal(pm.Data, &googlePayData); err != nil {
+			return err
+		}
+		i.Data = googlePayData
+	case "paypal":
+		var paypalData PaymentMethodDataPaypal
+		if err := json.Unmarshal(pm.Data, &paypalData); err != nil {
+			return err
+		}
+		i.Data = paypalData
+	default:
+		return fmt.Errorf("unknown payment method type: %s", i.Type)
+	}
+
+	i.Created = (*time.Time)(pm.Created)
+	return nil
+}
+
+// ListPaymentMethods lists PaymentMethods
+func (c *Client) ListPaymentMethods(ctx context.Context, opts *ListOptions) ([]PaymentMethod, error) {
+	return getPaginatedResults[PaymentMethod](ctx, c, "account/payment-methods", opts)
+}
+
+// GetPaymentMethod gets the payment method with the provided ID
+func (c *Client) GetPaymentMethod(ctx context.Context, paymentMethodID int) (*PaymentMethod, error) {
+	e := formatAPIPath("account/payment-methods/%d", paymentMethodID)
+	return doGETRequest[PaymentMethod](ctx, c, e)
+}
+
+// DeletePaymentMethod deletes the payment method with the provided ID
+func (c *Client) DeletePaymentMethod(ctx context.Context, paymentMethodID int) error {
+	e := formatAPIPath("account/payment-methods/%d", paymentMethodID)
+	return doDELETERequest(ctx, c, e)
+}
+
+// AddPaymentMethod adds the provided payment method to the account
+func (c *Client) AddPaymentMethod(ctx context.Context, opts PaymentMethodCreateOptions) error {
+	_, err := doPOSTRequest[PaymentMethod, any](ctx, c, "account/payment-methods", opts)
+	return err
+}
+
+// SetDefaultPaymentMethod sets the payment method with the provided ID as the default
+func (c *Client) SetDefaultPaymentMethod(ctx context.Context, paymentMethodID int) error {
+	e := formatAPIPath("account/payment-methods/%d", paymentMethodID)
+	_, err := doPOSTRequest[PaymentMethod, any](ctx, c, e)
+	return err
+}
diff --git a/account_payments.go b/account_payments.go
index 452f53f16..dc43c008e 100644
--- a/account_payments.go
+++ b/account_payments.go
@@ -78,7 +78,7 @@ func (c *Client) GetPayment(ctx context.Context, paymentID int) (*Payment, error
 
 // CreatePayment creates a Payment
 func (c *Client) CreatePayment(ctx context.Context, opts PaymentCreateOptions) (*Payment, error) {
-	e := "accounts/payments"
+	e := "account/payments"
 	response, err := doPOSTRequest[Payment](ctx, c, e, opts)
 	if err != nil {
 		return nil, err
diff --git a/account_promo_credits.go b/account_promo_credits.go
new file mode 100644
index 000000000..a40dc243d
--- /dev/null
+++ b/account_promo_credits.go
@@ -0,0 +1,67 @@
+package linodego
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/linode/linodego/internal/parseabletime"
+)
+
+// Promotion represents a Promotion object
+type Promotion struct {
+	// The amount available to spend per month.
+	CreditMonthlyCap string `json:"credit_monthly_cap"`
+
+	// The total amount of credit left for this promotion.
+	CreditRemaining string `json:"credit_remaining"`
+
+	// A detailed description of this promotion.
+	Description string `json:"description"`
+
+	// When this promotion's credits expire.
+	ExpirationDate *time.Time `json:"-"`
+
+	// The location of an image for this promotion.
+	ImageURL string `json:"image_url"`
+
+	// The service to which this promotion applies.
+	ServiceType string `json:"service_type"`
+
+	// Short details of this promotion.
+	Summary string `json:"summary"`
+
+	// The amount of credit left for this month for this promotion.
+	ThisMonthCreditRemaining string `json:"this_month_credit_remaining"`
+}
+
+// PromoCodeCreateOptions fields are those accepted by AddPromoCode
+type PromoCodeCreateOptions struct {
+	// The Promo Code.
+	PromoCode string `json:"promo_code"`
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface
+func (i *Promotion) UnmarshalJSON(b []byte) error {
+	type Mask Promotion
+
+	p := struct {
+		*Mask
+		ExpirationDate *parseabletime.ParseableTime `json:"date"`
+	}{
+		Mask: (*Mask)(i),
+	}
+
+	if err := json.Unmarshal(b, &p); err != nil {
+		return err
+	}
+
+	i.ExpirationDate = (*time.Time)(p.ExpirationDate)
+
+	return nil
+}
+
+// AddPromoCode adds the provided promo code to the account
+func (c *Client) AddPromoCode(ctx context.Context, opts PromoCodeCreateOptions) (*Promotion, error) {
+	return doPOSTRequest[Promotion, any](ctx, c, "account/promo-codes", opts)
+}
diff --git a/test/unit/account_payment_methods_test.go b/test/unit/account_payment_methods_test.go
new file mode 100644
index 000000000..277d1ffc1
--- /dev/null
+++ b/test/unit/account_payment_methods_test.go
@@ -0,0 +1,102 @@
+package unit
+
+import (
+	"context"
+	"github.com/jarcoal/httpmock"
+	"github.com/linode/linodego"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestAccountPaymentMethods_Get(t *testing.T) {
+	fixtureData, err := fixtures.GetFixture("account_payment_methods_get")
+	assert.NoError(t, err)
+
+	var base ClientBaseCase
+	base.SetUp(t)
+	defer base.TearDown(t)
+
+	base.MockGet("account/payment-methods/123", fixtureData)
+
+	pm, err := base.Client.GetPaymentMethod(context.Background(), 123)
+	assert.NoError(t, err)
+
+	assert.Equal(t, 123, pm.ID)
+	assert.Equal(t, true, pm.IsDefault)
+	assert.Equal(t, "credit_card", pm.Type)
+	assert.Equal(t, linodego.PaymentMethodDataCreditCard{
+		CardType: "Discover",
+		Expiry:   "06/2022",
+		LastFour: "1234",
+	}, pm.Data)
+}
+
+func TestAccountPaymentMethods_List(t *testing.T) {
+	fixtureData, err := fixtures.GetFixture("account_payment_methods_list")
+	assert.NoError(t, err)
+
+	var base ClientBaseCase
+	base.SetUp(t)
+	defer base.TearDown(t)
+
+	base.MockGet("account/payment-methods", fixtureData)
+
+	methods, err := base.Client.ListPaymentMethods(context.Background(), nil)
+	assert.NoError(t, err)
+
+	assert.Equal(t, 1, len(methods))
+	pm := methods[0]
+	assert.Equal(t, 123, pm.ID)
+	assert.Equal(t, true, pm.IsDefault)
+	assert.Equal(t, "credit_card", pm.Type)
+	assert.Equal(t, linodego.PaymentMethodDataCreditCard{
+		CardType: "Discover",
+		Expiry:   "06/2022",
+		LastFour: "1234",
+	}, pm.Data)
+}
+
+func TestAccountPaymentMethods_Add(t *testing.T) {
+	client := createMockClient(t)
+
+	card := linodego.PaymentMethodCreateOptionsData{
+		CardNumber:  "1234123412341234",
+		CVV:         "123",
+		ExpiryMonth: 3,
+		ExpiryYear:  2028,
+	}
+
+	requestData := linodego.PaymentMethodCreateOptions{
+		Data:      &card,
+		IsDefault: true,
+		Type:      "credit_card",
+	}
+
+	httpmock.RegisterRegexpResponder("POST", mockRequestURL(t, "account/payment-methods"),
+		mockRequestBodyValidate(t, requestData, nil))
+
+	if err := client.AddPaymentMethod(context.Background(), requestData); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestAccountPaymentMethods_Delete(t *testing.T) {
+	client := createMockClient(t)
+
+	httpmock.RegisterRegexpResponder("DELETE", mockRequestURL(t, "account/payment-methods/123"), httpmock.NewStringResponder(200, "{}"))
+
+	if err := client.DeletePaymentMethod(context.Background(), 123); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestAccountPaymentMethods_SetDefault(t *testing.T) {
+	client := createMockClient(t)
+
+	httpmock.RegisterRegexpResponder("POST", mockRequestURL(t, "account/payment-methods/123"),
+		httpmock.NewStringResponder(200, "{}"))
+
+	if err := client.SetDefaultPaymentMethod(context.Background(), 123); err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/test/unit/account_payments_test.go b/test/unit/account_payments_test.go
new file mode 100644
index 000000000..c78d6f9e5
--- /dev/null
+++ b/test/unit/account_payments_test.go
@@ -0,0 +1,33 @@
+package unit
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/linode/linodego"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestAccountPayments_Create(t *testing.T) {
+	fixtureData, err := fixtures.GetFixture("account_payment_create")
+	assert.NoError(t, err)
+
+	var base ClientBaseCase
+	base.SetUp(t)
+	defer base.TearDown(t)
+
+	base.MockPost("account/payments", fixtureData)
+
+	requestData := linodego.PaymentCreateOptions{
+		CVV: "123",
+		USD: json.Number("120.50"),
+	}
+
+	payment, err := base.Client.CreatePayment(context.Background(), requestData)
+	if err != nil {
+		t.Fatalf("Error creating payment: %v", err)
+	}
+
+	assert.Equal(t, 123, payment.ID)
+	assert.Equal(t, json.Number("120.50"), payment.USD)
+}
diff --git a/test/unit/account_promo_credits_test.go b/test/unit/account_promo_credits_test.go
new file mode 100644
index 000000000..eaf1513fb
--- /dev/null
+++ b/test/unit/account_promo_credits_test.go
@@ -0,0 +1,36 @@
+package unit
+
+import (
+	"context"
+	"github.com/linode/linodego"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestAccountPromoCredits_Add(t *testing.T) {
+	fixtureData, err := fixtures.GetFixture("account_promo_credits_add_promo_code")
+	assert.NoError(t, err)
+
+	var base ClientBaseCase
+	base.SetUp(t)
+	defer base.TearDown(t)
+
+	base.MockPost("account/promo-codes", fixtureData)
+
+	requestData := linodego.PromoCodeCreateOptions{
+		PromoCode: "supercoolpromocode",
+	}
+
+	promoCode, err := base.Client.AddPromoCode(context.Background(), requestData)
+	if err != nil {
+		t.Fatalf("Error adding promo code: %v", err)
+	}
+
+	assert.Equal(t, "10.00", promoCode.CreditMonthlyCap)
+	assert.Equal(t, "50.00", promoCode.CreditRemaining)
+	assert.Equal(t, "Receive up to $10 off your services every month for 6 months! Unused credits will expire once this promotion period ends.", promoCode.Description)
+	assert.Equal(t, "https://linode.com/10_a_month_promotion.svg", promoCode.ImageURL)
+	assert.Equal(t, "all", promoCode.ServiceType)
+	assert.Equal(t, "$10 off your Linode a month!", promoCode.Summary)
+	assert.Equal(t, "10.00", promoCode.ThisMonthCreditRemaining)
+}
diff --git a/test/unit/fixtures/account_payment_create.json b/test/unit/fixtures/account_payment_create.json
new file mode 100644
index 000000000..585c8c276
--- /dev/null
+++ b/test/unit/fixtures/account_payment_create.json
@@ -0,0 +1,5 @@
+{
+  "date": "2018-01-15T00:01:01",
+  "id": 123,
+  "usd": "120.50"
+}
\ No newline at end of file
diff --git a/test/unit/fixtures/account_payment_methods_get.json b/test/unit/fixtures/account_payment_methods_get.json
new file mode 100644
index 000000000..0c9ad45e1
--- /dev/null
+++ b/test/unit/fixtures/account_payment_methods_get.json
@@ -0,0 +1,11 @@
+{
+  "created": "2018-01-15T00:01:01",
+  "data": {
+    "card_type": "Discover",
+    "expiry": "06/2022",
+    "last_four": "1234"
+  },
+  "id": 123,
+  "is_default": true,
+  "type": "credit_card"
+}
\ No newline at end of file
diff --git a/test/unit/fixtures/account_payment_methods_list.json b/test/unit/fixtures/account_payment_methods_list.json
new file mode 100644
index 000000000..9e0be04b2
--- /dev/null
+++ b/test/unit/fixtures/account_payment_methods_list.json
@@ -0,0 +1,18 @@
+{
+  "data": [
+    {
+      "created": "2018-01-15T00:01:01",
+      "data": {
+        "card_type": "Discover",
+        "expiry": "06/2022",
+        "last_four": "1234"
+      },
+      "id": 123,
+      "is_default": true,
+      "type": "credit_card"
+    }
+  ],
+  "page": 1,
+  "pages": 1,
+  "results": 1
+}
\ No newline at end of file
diff --git a/test/unit/fixtures/account_promo_credits_add_promo_code.json b/test/unit/fixtures/account_promo_credits_add_promo_code.json
new file mode 100644
index 000000000..1bd43696e
--- /dev/null
+++ b/test/unit/fixtures/account_promo_credits_add_promo_code.json
@@ -0,0 +1,10 @@
+{
+  "credit_monthly_cap": "10.00",
+  "credit_remaining": "50.00",
+  "description": "Receive up to $10 off your services every month for 6 months! Unused credits will expire once this promotion period ends.",
+  "expire_dt": "2018-01-31T23:59:59",
+  "image_url": "https://linode.com/10_a_month_promotion.svg",
+  "service_type": "all",
+  "summary": "$10 off your Linode a month!",
+  "this_month_credit_remaining": "10.00"
+}
\ No newline at end of file